From 345fd715f5b1a1a1af65a7a6cd203c49bc6f9023 Mon Sep 17 00:00:00 2001
From: Janos SUTO <sj@acts.hu>
Date: Mon, 10 Aug 2020 20:58:34 +0200
Subject: [PATCH] cppcheck refactoring

Signed-off-by: Janos SUTO <sj@acts.hu>
---
 configure                       |  2 +-
 configure.in                    |  2 +-
 cppcheck.sh                     |  7 +++
 src/archive.c                   | 10 ++--
 src/attachment.c                |  3 +-
 src/base64.c                    | 78 ---------------------------
 src/bdat.c                      |  3 +-
 src/cfg.c                       | 19 -------
 src/clamd.c                     |  6 +--
 src/counters.c                  |  9 ++--
 src/decoder.c                   | 21 ++------
 src/decoder.h                   |  3 --
 src/defs.h                      |  4 --
 src/digest.c                    |  4 +-
 src/extract.c                   | 11 ++--
 src/hash.c                      | 14 +++--
 src/imap.c                      |  4 +-
 src/import.c                    |  5 +-
 src/import_imap.c               |  2 +-
 src/list.c                      | 94 ---------------------------------
 src/list.h                      | 16 ------
 src/memc.c                      | 53 ++-----------------
 src/message.c                   |  9 ----
 src/misc.c                      | 62 +++-------------------
 src/misc.h                      |  3 --
 src/mydomains.c                 |  5 +-
 src/parser.c                    | 27 +++++-----
 src/parser_utils.c              | 52 ++++++++----------
 src/pop3.c                      | 12 ++---
 src/reindex.c                   | 15 +++---
 src/rules.c                     | 36 ++++++-------
 src/session.c                   | 11 ++--
 src/smtp.c                      |  9 ++--
 src/stats.c                     |  4 +-
 src/store.c                     |  3 +-
 src/tai.c                       | 19 -------
 src/test.c                      |  6 +--
 suppressions.txt                | 13 +++++
 unit_tests/check_digest.c       | 16 +++---
 unit_tests/check_misc.c         |  8 +--
 unit_tests/check_parser_utils.c |  3 +-
 unit_tests/smtp.c               | 10 ++--
 42 files changed, 169 insertions(+), 524 deletions(-)
 create mode 100755 cppcheck.sh
 delete mode 100644 src/base64.c
 delete mode 100644 src/list.c
 delete mode 100644 src/list.h
 create mode 100644 suppressions.txt

diff --git a/configure b/configure
index 639223d5..19428bde 100755
--- a/configure
+++ b/configure
@@ -4854,7 +4854,7 @@ echo; echo
 
 CFLAGS="$static -std=c99 -O2 -fPIC -Wall -Wextra -Wuninitialized -Wno-format-truncation -g"
 LIBS="$antispam_libs $sunos_libs "
-OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o smtp.o session.o bdat.o message.o attachment.o digest.o store.o archive.o tai.o import.o import_maildir.o import_mailbox.o import_pop3.o import_imap.o imap.o pop3.o extract.o mydomains.o tokenizer.o $objs"
+OBJS="dirs.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o smtp.o session.o bdat.o message.o attachment.o digest.o store.o archive.o tai.o import.o import_maildir.o import_mailbox.o import_pop3.o import_imap.o imap.o pop3.o extract.o mydomains.o tokenizer.o $objs"
 
 ac_config_files="$ac_config_files Makefile src/Makefile etc/Makefile util/Makefile init.d/Makefile systemd/Makefile unit_tests/Makefile webui/Makefile contrib/imap/Makefile"
 
diff --git a/configure.in b/configure.in
index 388ac8e7..34bbebcc 100644
--- a/configure.in
+++ b/configure.in
@@ -537,7 +537,7 @@ echo; echo
 
 CFLAGS="$static -std=c99 -O2 -fPIC -Wall -Wextra -Wuninitialized -Wno-format-truncation -g"
 LIBS="$antispam_libs $sunos_libs "
-OBJS="dirs.o base64.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o smtp.o session.o bdat.o message.o attachment.o digest.o store.o archive.o tai.o import.o import_maildir.o import_mailbox.o import_pop3.o import_imap.o imap.o pop3.o extract.o mydomains.o tokenizer.o $objs"
+OBJS="dirs.o misc.o counters.o cfg.o sig.o decoder.o hash.o parser.o parser_utils.o rules.o smtp.o session.o bdat.o message.o attachment.o digest.o store.o archive.o tai.o import.o import_maildir.o import_mailbox.o import_pop3.o import_imap.o imap.o pop3.o extract.o mydomains.o tokenizer.o $objs"
 
 AC_CONFIG_FILES([Makefile src/Makefile etc/Makefile util/Makefile init.d/Makefile systemd/Makefile unit_tests/Makefile webui/Makefile contrib/imap/Makefile])
 AC_OUTPUT
diff --git a/cppcheck.sh b/cppcheck.sh
new file mode 100755
index 00000000..88794857
--- /dev/null
+++ b/cppcheck.sh
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -o nounset
+set -o errexit
+set -o pipefail
+
+cppcheck -DHAVE_PDFTOTEXT -DHAVE_PPTHTML -DHAVE_TNEF -DHAVE_UNRTF -DHAVE_XLS2CSV -DHAVE_CATPPT -DHAVE_CATDOC -DHAVE_ZIP -D_GNU_SOURCE -DHAVE_DAEMON -DHAVE_TRE -DHAVE_CLAMD -DHAVE_LIBCLAMAV -DNEED_MYSQL --error-exitcode=1 --enable=all --suppressions-list=suppressions.txt --force src/ unit_tests/
diff --git a/src/archive.c b/src/archive.c
index 9a0ffe97..9984c26f 100644
--- a/src/archive.c
+++ b/src/archive.c
@@ -54,7 +54,6 @@ void zerr(int ret){
 
 int inf(unsigned char *in, int len, int mode, char **buffer, FILE *dest){
    int ret, pos=0;
-   unsigned have;
    z_stream strm;
    char *new_ptr;
    unsigned char out[REALLYBIGBUFSIZE];
@@ -96,7 +95,7 @@ int inf(unsigned char *in, int len, int mode, char **buffer, FILE *dest){
                 return ret;
       }
 
-      have = REALLYBIGBUFSIZE - strm.avail_out;
+      unsigned have = REALLYBIGBUFSIZE - strm.avail_out;
 
       /*
        * write the uncompressed result either to stdout
@@ -235,8 +234,8 @@ CLEANUP:
 
 
 int retrieve_email_from_archive(struct session_data *sdata, FILE *dest, struct config *cfg){
-   int i, attachments;
-   char *buffer=NULL, *saved_buffer, *p, filename[SMALLBUFSIZE], pointer[SMALLBUFSIZE];
+   int attachments;
+   char *buffer=NULL, *saved_buffer, *p, filename[SMALLBUFSIZE];
    struct ptr_array ptr_arr[MAX_ATTACHMENTS];
 #ifdef HAVE_SUPPORT_FOR_COMPAT_STORAGE_LAYOUT
    struct stat st;
@@ -270,7 +269,8 @@ int retrieve_email_from_archive(struct session_data *sdata, FILE *dest, struct c
       if(buffer){
          saved_buffer = buffer;
 
-         for(i=1; i<=attachments; i++){
+         for(int i=1; i<=attachments; i++){
+            char pointer[SMALLBUFSIZE];
             snprintf(pointer, sizeof(pointer)-1, "ATTACHMENT_POINTER_%s.a%d_XXX_PILER", sdata->ttmpfile, i);
 
             p = strstr(buffer, pointer);
diff --git a/src/attachment.c b/src/attachment.c
index 70a156b6..f6d14f5d 100644
--- a/src/attachment.c
+++ b/src/attachment.c
@@ -17,7 +17,6 @@
 
 
 int store_attachments(struct session_data *sdata, struct parser_state *state, struct config *cfg){
-   uint64 id=0;
    int i, rc=1, found, affected_rows;
    struct sql sql, sql2;
 
@@ -27,7 +26,7 @@ int store_attachments(struct session_data *sdata, struct parser_state *state, st
 
    for(i=1; i<=state->n_attachments; i++){
       found = 0;
-      id = 0;
+      uint64 id = 0;
 
       if(state->attachments[i].size > 0){
 
diff --git a/src/base64.c b/src/base64.c
deleted file mode 100644
index 82e69ff2..00000000
--- a/src/base64.c
+++ /dev/null
@@ -1,78 +0,0 @@
-/*
- * base64.c, SJ
- */
-
-#include <stdio.h>
-#include <string.h>
-
-
-char base64_value(char c){
-   static const char *base64_table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-   if((int)c > 63) return '=';
-
-   return base64_table[(int)c];
-}
-
-
-void base64_encode_block(unsigned char *in, int inlen, char *out){
-   char a, b, c, d, fragment;
-
-   sprintf(out, "====");
-
-   if(inlen <= 0) return;
-
-   fragment = *in & 0x3;
-
-   a = *in >> 2;
-
-   out[0] = base64_value(a);
-
-   b = fragment << 4;
-
-   if(inlen > 1)
-      b += *(in+1) >> 4;
-
-   out[1] = base64_value(b);
-
-   if(inlen == 1) return;
-
-
-   c = *(in+1) & 0xf;
-   c = c << 2;
-
-   if(inlen > 2){
-      fragment = *(in+2) & 0xfc;
-      c += fragment >> 6;
-
-      d = *(in+2) & 0x3f;
-      out[3] = base64_value(d);
-   }
-
-   out[2] = base64_value(c);
-}
-
-
-void base64_encode(unsigned char *in, int inlen, char *out, int outlen){
-   int i=0, j, pos=0;
-   unsigned char buf[3];
-
-   memset(buf, 0, 3);
-   memset(out, 0, outlen);
-
-   for(j=0; j<inlen; j++){
-
-      if(i == 3){
-         base64_encode_block(buf, 3, &out[pos]); pos += 4;
-
-         memset(buf, 0, 3);
-
-         i = 0;
-      }
-
-      buf[i] = *(in+j);
-      i++;
-   }
-
-   base64_encode_block(buf, i, &out[pos]);
-}
diff --git a/src/bdat.c b/src/bdat.c
index 701fdf2e..8dde847b 100644
--- a/src/bdat.c
+++ b/src/bdat.c
@@ -54,8 +54,6 @@ void get_bdat_size_to_read(struct smtp_session *session, char *buf){
 
 
 void process_bdat(struct smtp_session *session, char *readbuf, int readlen, struct config *cfg){
-   char buf[SMALLBUFSIZE];
-
    if(readlen <= 0) return;
 
    if(session->fd == -1){
@@ -106,6 +104,7 @@ void process_bdat(struct smtp_session *session, char *readbuf, int readlen, stru
 
          move_email(session);
 
+         char buf[SMALLBUFSIZE];
          snprintf(buf, sizeof(buf)-1, "250 OK <%s>\r\n", session->ttmpfile);
          send_smtp_response(session, buf);
          syslog(LOG_PRIORITY, "received: %s, from=%s, size=%d, client=%s, fd=%d", session->ttmpfile, session->mailfrom, session->tot_len, session->remote_host, session->net.socket);
diff --git a/src/cfg.c b/src/cfg.c
index 820e5cd9..0c40b705 100644
--- a/src/cfg.c
+++ b/src/cfg.c
@@ -17,31 +17,12 @@ int string_parser(char *src, char *target, int limit){
    return 0;
 };
 
-int multi_line_string_parser(char *src, char *target, unsigned int limit){
-   if(strlen(src) > 0 && strlen(target) + strlen(src) + 3 < limit){
-      strncat(target, src, limit-strlen(target));
-      strncat(target, "\r\n", limit-strlen(target));
-
-      return 0;
-   }
-
-   return 1;
-};
-
 int int_parser(char *src, int *target){
    *target = strtol(src, (char **) NULL, 10);
 
    return 0;
 };
 
-
-int float_parser(char *src, float *target){
-   *target = strtof(src, (char **) NULL);
-
-   return 0;
-};
-
-
 struct _parse_rule {
    char *name;
    char *type;
diff --git a/src/clamd.c b/src/clamd.c
index 8f7f3f08..07b4a15b 100644
--- a/src/clamd.c
+++ b/src/clamd.c
@@ -20,7 +20,7 @@
 
 int clamd_scan(char *tmpfile, struct config *cfg){
    int s, n;
-   char *p, *q, buf[MAXBUFSIZE], scan_cmd[SMALLBUFSIZE];
+   char buf[MAXBUFSIZE], scan_cmd[SMALLBUFSIZE];
    struct sockaddr_un server;
 
    chmod(tmpfile, 0644);
@@ -58,9 +58,9 @@ int clamd_scan(char *tmpfile, struct config *cfg){
    if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: CLAMD DEBUG: %d %s", tmpfile, n, buf);
 
    if(strcasestr(buf, CLAMD_RESP_INFECTED)){
-      p = strchr(buf, ' ');
+      char *p = strchr(buf, ' ');
       if(p){
-         q = strrchr(p, ' ');
+         char *q = strrchr(p, ' ');
          if(q){
             *q = '\0';
             p++;
diff --git a/src/counters.c b/src/counters.c
index 35ad9402..f7030b30 100644
--- a/src/counters.c
+++ b/src/counters.c
@@ -51,13 +51,12 @@ struct counters load_counters(struct session_data *sdata){
 void update_counters(struct session_data *sdata, struct data *data, struct counters *counters, struct config *cfg){
    char buf[MAXBUFSIZE];
 #ifdef HAVE_MEMCACHED
-   unsigned long long mc, rcvd;
+   unsigned long long mc;
    struct counters c;
-   char key[MAX_MEMCACHED_KEY_LEN];
    unsigned int flags=0;
 #endif
 
-   if(counters->c_virus + counters->c_duplicate + counters->c_ignore + counters->c_size + counters->c_stored_size <= 0) return;
+   if(counters->c_virus + counters->c_duplicate + counters->c_ignore + counters->c_size + counters->c_stored_size == 0) return;
 
 #ifdef HAVE_MEMCACHED
    if(cfg->update_counters_to_memcached == 1){
@@ -65,7 +64,7 @@ void update_counters(struct session_data *sdata, struct data *data, struct count
       /* increment counters to memcached */
 
       if(memcached_increment(&(data->memc), MEMCACHED_MSGS_RCVD, counters->c_rcvd, &mc) == MEMCACHED_SUCCESS){
-         rcvd = mc;
+         unsigned long long rcvd = mc;
 
          if(counters->c_virus > 0) memcached_increment(&(data->memc), MEMCACHED_MSGS_VIRUS, counters->c_virus, &mc);
          if(counters->c_duplicate > 0) memcached_increment(&(data->memc), MEMCACHED_MSGS_DUPLICATE, counters->c_duplicate, &mc);
@@ -79,6 +78,8 @@ void update_counters(struct session_data *sdata, struct data *data, struct count
          snprintf(buf, MAXBUFSIZE-1, "%s %s %s %s %s %s %s", MEMCACHED_MSGS_RCVD, MEMCACHED_MSGS_VIRUS, MEMCACHED_MSGS_DUPLICATE, MEMCACHED_MSGS_IGNORE, MEMCACHED_MSGS_SIZE, MEMCACHED_MSGS_STORED_SIZE, MEMCACHED_COUNTERS_LAST_UPDATE);
 
          if(memcached_mget(&(data->memc), buf) == MEMCACHED_SUCCESS){
+            char key[MAX_MEMCACHED_KEY_LEN];
+
             while((memcached_fetch_result(&(data->memc), &key[0], &buf[0], &flags))){
                if(!strcmp(key, MEMCACHED_MSGS_RCVD)) c.c_rcvd = strtoull(buf, NULL, 10);
                else if(!strcmp(key, MEMCACHED_MSGS_VIRUS)) c.c_virus = strtoull(buf, NULL, 10);
diff --git a/src/decoder.c b/src/decoder.c
index 93c4fcc7..fc034ff1 100644
--- a/src/decoder.c
+++ b/src/decoder.c
@@ -98,20 +98,6 @@ inline void utf8_encode_char(unsigned char c, unsigned char *buf, int buflen, in
 }
 
 
-void sanitiseBase64(char *s){
-   char *p1;
-
-   if(s == NULL) return;
-
-   for(; *s; s++){
-      if(b64[(unsigned int)(*s & 0xFF)] == 255){
-         for(p1 = s; p1[0] != '\0'; p1++)
-            p1[0] = p1[1];
-      }
-   }
-}
-
-
 inline static void pack_4_into_3(char *s, char *s2){
    int j, n[4], k1, k2;
 
@@ -157,7 +143,7 @@ int decodeBase64(char *p){
 
 
 int decode_base64_to_buffer(char *p, int plen, unsigned char *b, int blen){
-   int i, len=0, decodedlen;
+   int i, len=0;
    char s[5], s2[3];
 
    if(plen < 4 || plen > blen)
@@ -166,7 +152,7 @@ int decode_base64_to_buffer(char *p, int plen, unsigned char *b, int blen){
    for(i=0; i<plen; i+=4){
       memcpy(s, p+i, 4);
       s[4] = '\0';
-      decodedlen = 3;
+      int decodedlen = 3;
 
       /* safety check against abnormally long lines */
 
@@ -191,12 +177,11 @@ int decode_base64_to_buffer(char *p, int plen, unsigned char *b, int blen){
 void decodeQP(char *p){
    unsigned int i;
    int k=0, a, b;
-   char c;
 
    if(p == NULL) return;
 
    for(i=0; i<strlen((char*)p); i++){
-      c = p[i];
+      char c = p[i];
 
       if(p[i] == '=' && isxdigit(p[i+1]) && isxdigit(p[i+2])){
          a = p[i+1];
diff --git a/src/decoder.h b/src/decoder.h
index 132d332c..bb823739 100644
--- a/src/decoder.h
+++ b/src/decoder.h
@@ -5,9 +5,6 @@
 #ifndef _DECODER_H
  #define _DECODER_H
 
-void base64_encode(unsigned char *in, int inlen, char *out, int outlen);
-
-void sanitiseBase64(char *s);
 int decodeBase64(char *p);
 int decode_base64_to_buffer(char *p, int plen, unsigned char *b, int blen);
 void decodeQP(char *p);
diff --git a/src/defs.h b/src/defs.h
index c76221c8..50be06f0 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -241,10 +241,6 @@ struct session_data {
 #ifdef NEED_MYSQL
    MYSQL mysql;
 #endif
-#ifdef NEED_PSQL
-   PGconn *psql;
-   char conninfo[SMALLBUFSIZE];
-#endif
 };
 
 
diff --git a/src/digest.c b/src/digest.c
index d8146726..5af1fa53 100644
--- a/src/digest.c
+++ b/src/digest.c
@@ -34,7 +34,7 @@ int search_header_end(char *p, int n){
 
 
 int make_digests(struct session_data *sdata, struct config *cfg){
-   int i=0, n, fd, offset=3, hdr_len=0, len=0;
+   int i=0, n, fd, offset=3, hdr_len=0;
    char *body=NULL;
    unsigned char buf[BIGBUFSIZE], md[DIGEST_LENGTH], md2[DIGEST_LENGTH];
    SHA256_CTX context, context2;
@@ -50,8 +50,6 @@ int make_digests(struct session_data *sdata, struct config *cfg){
 
 
    while((n = read(fd, buf, sizeof(buf))) > 0){
-      len += n;
-
       SHA256_Update(&context2, buf, n);
 
       body = (char *)&buf[0];
diff --git a/src/extract.c b/src/extract.c
index fb42b574..9d391449 100644
--- a/src/extract.c
+++ b/src/extract.c
@@ -40,7 +40,7 @@ int remove_xml(char *src, char *dest, int destlen, int *html){
 
 #ifdef HAVE_ZIP
 int extract_opendocument(struct session_data *sdata, struct parser_state *state, char *filename, char *prefix){
-   int errorp, i=0, len=0, html=0;
+   int errorp, i=0, html=0;
    unsigned int len2;
    char buf[4*MAXBUFSIZE], puf[4*MAXBUFSIZE];
    struct zip *z;
@@ -60,6 +60,7 @@ int extract_opendocument(struct session_data *sdata, struct parser_state *state,
 
          zf = zip_fopen_index(z, i, 0);
          if(zf){
+            int len;
             while((len = zip_fread(zf, buf, sizeof(buf)-2)) > 0){
 
                len2 = remove_xml(buf, puf, sizeof(puf), &html);
@@ -89,7 +90,7 @@ int extract_opendocument(struct session_data *sdata, struct parser_state *state,
 
 
 int unzip_file(struct session_data *sdata, struct parser_state *state, char *filename, int *rec, struct config *cfg){
-   int errorp, i=0, len=0, fd;
+   int errorp, i=0, fd;
    char *p, extracted_filename[SMALLBUFSIZE], buf[MAXBUFSIZE];
    struct zip *z;
    struct zip_stat sb;
@@ -120,6 +121,7 @@ int unzip_file(struct session_data *sdata, struct parser_state *state, char *fil
             if(fd != -1){
                zf = zip_fopen_index(z, i, 0);
                if(zf){
+                  int len;
                   while((len = zip_fread(zf, buf, sizeof(buf))) > 0){
                      if(write(fd, buf, len) == -1) syslog(LOG_PRIORITY, "ERROR: error writing to fd in %s", __func__);
                   }
@@ -207,9 +209,7 @@ void kill_helper(){
 
 void extract_attachment_content(struct session_data *sdata, struct parser_state *state, char *filename, char *type, int *rec, struct config *cfg){
    int link[2];
-   ssize_t n;
    pid_t pid;
-   char outbuf[MAXBUFSIZE];
 
    if(strcmp(type, "other") == 0 || strcmp(type, "text") == 0) return;
 
@@ -304,6 +304,9 @@ void extract_attachment_content(struct session_data *sdata, struct parser_state
    }
    else {
       close(link[1]);
+      ssize_t n;
+      char outbuf[MAXBUFSIZE];
+
       while((n = read(link[0], outbuf, sizeof(outbuf))) > 0){
          if(state->bodylen < BIGBUFSIZE-n-1){
             memcpy(&(state->b_body[state->bodylen]), outbuf, n);
diff --git a/src/hash.c b/src/hash.c
index 027768b9..bb131cbf 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -33,12 +33,10 @@ void clearhash(struct node *xhash[]){
          p = q;
 
          q = q->r;
-         if(p){
-            if(p->str){
-               free(p->str);
-            }
-            free(p);
+         if(p->str){
+            free(p->str);
          }
+         free(p);
       }
       xhash[i] = NULL;
    }
@@ -154,12 +152,12 @@ int is_substr_in_hash(struct node *xhash[], char *s){
 
 
 unsigned int DJBHash(char* str, unsigned int len){
-   unsigned int hash = 5381;
+   unsigned int hashval = 5381;
    unsigned int i    = 0;
 
    for(i=0; i < len; str++, i++){
-      hash = ((hash << 5) + hash) + (*str);
+      hashval = ((hashval << 5) + hashval) + (*str);
    }
 
-   return hash;
+   return hashval;
 }
diff --git a/src/imap.c b/src/imap.c
index 0af375d5..bd5008ac 100644
--- a/src/imap.c
+++ b/src/imap.c
@@ -314,7 +314,7 @@ void imap_expunge_message(struct data *data){
 
 
 int process_imap_folder(char *folder, struct session_data *sdata, struct data *data, struct config *cfg){
-   int rc=ERR, i, messages=0;
+   int i, messages=0;
 
    messages = imap_select_cmd_on_folder(folder, data);
 
@@ -330,7 +330,7 @@ int process_imap_folder(char *folder, struct session_data *sdata, struct data *d
          if(data->quiet == 0){ printf("processed: %7d [%3d%%]\r", data->import->processed_messages, 100*i/messages); fflush(stdout); }
 
          if(data->import->dryrun == 0){
-            rc = import_message(sdata, data, cfg);
+            int rc = import_message(sdata, data, cfg);
 
             if(data->import->remove_after_import == 1 && rc == OK){
                imap_delete_message(data, i);
diff --git a/src/import.c b/src/import.c
index 4ec7b7e4..eb16f8f8 100644
--- a/src/import.c
+++ b/src/import.c
@@ -20,7 +20,7 @@
 
 int import_message(struct session_data *sdata, struct data *data, struct config *cfg){
    int rc=ERR;
-   char *p, *rule, newpath[SMALLBUFSIZE];
+   char *rule;
    struct stat st;
    struct parser_state state;
    struct counters counters;
@@ -127,12 +127,13 @@ int import_message(struct session_data *sdata, struct data *data, struct config
    }
 
    if(rc != OK && data->import->failed_folder){
-      p = strrchr(data->import->filename, '/');
+      char *p = strrchr(data->import->filename, '/');
       if(p)
          p++;
       else
          p = data->import->filename;
 
+      char newpath[SMALLBUFSIZE];
       snprintf(newpath, sizeof(newpath)-2, "%s/%s", data->import->failed_folder, p);
 
       if(rename(data->import->filename, newpath))
diff --git a/src/import_imap.c b/src/import_imap.c
index 79876c74..7804767e 100644
--- a/src/import_imap.c
+++ b/src/import_imap.c
@@ -73,7 +73,7 @@ int import_from_imap_server(struct session_data *sdata, struct data *data, struc
       q = data->imapfolders[i];
       while(q != NULL){
 
-         if(q && q->str && strlen(q->str) > 1){
+         if(q->str && strlen(q->str) > 1){
 
             skipmatch = 0;
 
diff --git a/src/list.c b/src/list.c
deleted file mode 100644
index 965d48b3..00000000
--- a/src/list.c
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * list.c, SJ
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "list.h"
-#include "config.h"
-
-
-int append_list(struct list **list, char *p){
-   struct list *q, *t, *u=NULL;
-
-   q = *list;
-
-   while(q){
-      if(strcmp(q->s, p) == 0)
-         return 0;
-
-      u = q;
-      q = q->r;
-   }
-
-   t = create_list_item(p);
-   if(t){
-      if(*list == NULL)
-         *list = t;
-      else if(u)
-         u->r = t;
-
-      return 1;
-   }
-
-   return -1;
-}
-
-
-struct list *create_list_item(char *s){
-   struct list *h=NULL;
-
-   if((h = malloc(sizeof(struct list))) == NULL)
-      return NULL;
-
-   snprintf(h->s, SMALLBUFSIZE-1, "%s", s);
-   h->r = NULL;
-
-   return h;
-}
-
-
-int is_string_on_list(struct list *list, char *s){
-   struct list *p;
-
-   p = list;
-
-   while(p != NULL){
-      if(strcmp(p->s, s) == 0) return 1;
-      p = p->r;
-   }
-
-   return 0;
-}
-
-
-int is_item_on_string(struct list *list, char *s){
-   struct list *p;
-
-   p = list;
-
-   while(p != NULL){
-      if(strstr(s, p->s)) return 1;
-      p = p->r;
-   }
-
-   return 0;
-}
-
-
-void free_list(struct list *list){
-   struct list *p, *q;
-
-   p = list;
-
-   while(p != NULL){
-      q = p->r;
-
-      if(p)
-         free(p);
-
-      p = q;
-   }
-}
diff --git a/src/list.h b/src/list.h
deleted file mode 100644
index 56a413c7..00000000
--- a/src/list.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * list.h, SJ
- */
-
-#ifndef _LIST_H
- #define _LIST_H
-
-#include "defs.h"
-
-int append_list(struct list **list, char *p);
-struct list *create_list_item(char *s);
-int is_string_on_list(struct list *list, char *s);
-int is_item_on_string(struct list *list, char *s);
-void free_list(struct list *list);
-
-#endif /* _LIST_H */
diff --git a/src/memc.c b/src/memc.c
index c56c4db8..c04b84a0 100644
--- a/src/memc.c
+++ b/src/memc.c
@@ -59,7 +59,7 @@ void memcached_init(struct memcached_server *ptr, char *server_ip, int server_po
 
 
 int set_socket_options(struct memcached_server *ptr){
-   int error, flag=1, flags, rval;
+   int error, flag=1, flags;
    struct timeval waittime;
    struct linger linger;
 
@@ -128,8 +128,7 @@ int set_socket_options(struct memcached_server *ptr){
 
 
    if((flags & O_NONBLOCK) == 0){
-      rval = fcntl(ptr->fd, F_SETFL, flags | O_NONBLOCK);
-      if(rval == -1) return MEMCACHED_FAILURE;
+      if(fcntl(ptr->fd, F_SETFL, flags | O_NONBLOCK) == -1) return MEMCACHED_FAILURE;
    }
 
    return MEMCACHED_SUCCESS;
@@ -223,7 +222,7 @@ int memcached_add(struct memcached_server *ptr, char *cmd, char *key, char *valu
    if(memcached_connect(ptr) != MEMCACHED_SUCCESS) return MEMCACHED_FAILURE;
 
    // cmd could be either 'add' or 'set'
-   snprintf(ptr->buf, MAXBUFSIZE-1, "%s %s %d %ld %d \r\n", cmd, key, flags, expiry, valuelen);
+   snprintf(ptr->buf, MAXBUFSIZE-1, "%s %s %u %lu %u \r\n", cmd, key, flags, expiry, valuelen);
    len = strlen(ptr->buf);
 
    strncat(ptr->buf, value, MAXBUFSIZE-strlen(ptr->buf)-1);
@@ -263,52 +262,6 @@ int memcached_increment(struct memcached_server *ptr, char *key, unsigned long l
 }
 
 
-char *memcached_get(struct memcached_server *ptr, char *key, unsigned int *len, unsigned int *flags){
-   char *p;
-
-   if(memcached_connect(ptr) != MEMCACHED_SUCCESS) return NULL;
-
-   snprintf(ptr->buf, MAXBUFSIZE, "get %s \r\n", key);
-   send(ptr->fd, ptr->buf, strlen(ptr->buf), 0);
-
-   ptr->last_read_bytes = __recvtimeout(ptr->fd, ptr->buf, MAXBUFSIZE, ptr->rcv_timeout);
-
-   if(ptr->last_read_bytes <= 0){
-      memcached_shutdown(ptr);
-      return NULL;
-   }
-
-
-   if(ptr->last_read_bytes < 10) return NULL;
-
-   if(strncmp("VALUE ", ptr->buf, 6)) return NULL;
-
-   p = strchr(ptr->buf, '\r');
-   if(!p) return NULL;
-   *p = '\0';
-   ptr->result = p + 2;
-
-   p = strrchr(ptr->buf + 6, ' ');
-   if(!p) return NULL;
-   *len = atoi(p+1);
-   *p = '\0';
-
-
-   p = strrchr(ptr->buf + 6, ' ');
-   if(!p) return NULL;
-   *flags = atoi(p+1);
-   *p = '\0';
-
-
-   p = strchr(ptr->result, '\r');
-   if(!p) return NULL;
-
-   *p = '\0';
-
-   return ptr->result;
-}
-
-
 int memcached_mget(struct memcached_server *ptr, char *key){
 
    if(memcached_connect(ptr) != MEMCACHED_SUCCESS) return MEMCACHED_FAILURE;
diff --git a/src/message.c b/src/message.c
index 6279af31..7700fcdb 100644
--- a/src/message.c
+++ b/src/message.c
@@ -136,15 +136,6 @@ int store_recipients(struct session_data *sdata, char *to, uint64 id, struct con
 }
 
 
-void remove_recipients(struct session_data *sdata, uint64 id){
-   char s[SMALLBUFSIZE];
-
-   snprintf(s, sizeof(s)-1, "DELETE FROM " SQL_RECIPIENT_TABLE " WHERE id=%llu", id);
-
-   p_query(sdata, s);
-}
-
-
 int store_folder_id(struct session_data *sdata, struct data *data, uint64 id, struct config *cfg){
    int rc=ERR;
    struct sql sql;
diff --git a/src/misc.c b/src/misc.c
index 82703acb..d723f9ec 100644
--- a/src/misc.c
+++ b/src/misc.c
@@ -88,44 +88,6 @@ long tvdiff(struct timeval a, struct timeval b){
 }
 
 
-/*
- * count a character in buffer
- */
-
-int countCharacterInBuffer(char *p, char c){
-   int i=0;
-
-   for(; *p; p++){
-      if(*p == c)
-         i++;
-   }
-
-   return i;
-}
-
-
-void replaceCharacterInBuffer(char *p, char from, char to){
-   size_t i;
-   int k=0;
-
-   for(i=0; i<strlen(p); i++){
-      if(p[i] == from){
-         if(to > 0){
-            p[k] = to;
-            k++;
-         }
-      }
-      else {
-         p[k] = p[i];
-         k++;
-      }
-
-   }
-
-   p[k] = '\0';
-}
-
-
 /*
  * split a string by a character as delimiter
  */
@@ -181,10 +143,8 @@ char *split_str(char *row, char *what, char *s, int size){
       r += strlen(what);
    }
 
-   if(s != NULL){
-      strncpy(s, row, len);
-      s[len] = '\0';
-   }
+   strncpy(s, row, len);
+   s[len] = '\0';
 
    return r;
 }
@@ -215,8 +175,7 @@ int trimBuffer(char *s){
 
 
 int extract_verp_address(char *email){
-   char *p, *p1, *p2;
-   char puf[SMALLBUFSIZE];
+   char *p1;
 
    // a VERP address is like archive+user=domain.com@myarchive.local
 
@@ -226,13 +185,14 @@ int extract_verp_address(char *email){
 
    p1 = strchr(email, '+');
    if(p1){
-      p2 = strchr(p1, '@');
+      char *p2 = strchr(p1, '@');
       if(p2 && p2 > p1 + 2){
          if(strchr(p1+1, '=')){
+            char puf[SMALLBUFSIZE];
             memset(puf, 0, sizeof(puf));
 
             memcpy(&puf[0], p1+1, p2-p1-1);
-            p = strchr(puf, '=');
+            char *p = strchr(puf, '=');
             if(p) *p = '@';
             strcpy(email, puf);
          }
@@ -349,10 +309,10 @@ int get_random_bytes(unsigned char *buf, int len, unsigned char server_id){
 
 int readFromEntropyPool(int fd, void *_s, ssize_t n){
    char *s = _s;
-   ssize_t res, pos = 0;
+   ssize_t pos = 0;
 
    while(n > pos){
-      res = read(fd, s + pos, n - pos);
+      ssize_t res = read(fd, s + pos, n - pos);
       switch(res){
          case  -1: continue;
          case   0: return res;
@@ -605,12 +565,6 @@ void strtolower(char *s){
 }
 
 
-void *get_in_addr(struct sockaddr *sa){
-   if(sa->sa_family == AF_INET) return &(((struct sockaddr_in*)sa)->sin_addr);
-   return &(((struct sockaddr_in6*)sa)->sin6_addr);
-}
-
-
 int make_socket_non_blocking(int fd){
    int flags, s;
 
diff --git a/src/misc.h b/src/misc.h
index 7cd650c9..ed13c206 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -19,8 +19,6 @@ int get_build();
 void get_extractor_list();
 void __fatal(char *s);
 long tvdiff(struct timeval a, struct timeval b);
-int countCharacterInBuffer(char *p, char c);
-void replaceCharacterInBuffer(char *p, char from, char to);
 char *split(char *str, int ch, char *buf, int buflen, int *result);
 char *split_str(char *row, char *what, char *s, int size);
 int trimBuffer(char *s);
@@ -42,7 +40,6 @@ void init_session_data(struct session_data *sdata, struct config *cfg);
 int read_from_stdin(struct session_data *sdata);
 void strtolower(char *s);
 
-void *get_in_addr(struct sockaddr *sa);
 int make_socket_non_blocking(int fd);
 int create_and_bind(char *listen_addr, int listen_port);
 
diff --git a/src/mydomains.c b/src/mydomains.c
index a25bd25d..47f57fc2 100644
--- a/src/mydomains.c
+++ b/src/mydomains.c
@@ -11,7 +11,6 @@
 
 
 void load_mydomains(struct session_data *sdata, struct data *data, struct config *cfg){
-   int rc;
    char s[SMALLBUFSIZE];
    struct sql sql;
 
@@ -32,9 +31,7 @@ void load_mydomains(struct session_data *sdata, struct data *data, struct config
       p_store_results(&sql);
 
       while(p_fetch_results(&sql) == OK){
-         rc = addnode(data->mydomains, s);
-
-         if(rc == 0) syslog(LOG_PRIORITY, "failed to append mydomain: '%s'", s);
+         if(addnode(data->mydomains, s) == 0) syslog(LOG_PRIORITY, "failed to append mydomain: '%s'", s);
          else if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "added mydomain: '%s'", s);
 
          memset(s, 0, sizeof(s));
diff --git a/src/parser.c b/src/parser.c
index 9882aad1..08fb682a 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -73,9 +73,7 @@ struct parser_state parse_message(struct session_data *sdata, int take_into_piec
 
 
 void post_parse(struct session_data *sdata, struct parser_state *state, struct config *cfg){
-   int i, rec=0;
-   unsigned int len;
-   char *p;
+   int i;
 
    clearhash(state->boundaries);
    clearhash(state->rcpt);
@@ -105,12 +103,12 @@ void post_parse(struct session_data *sdata, struct parser_state *state, struct c
 
       if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: attachment list: i:%d, name=*%s*, type: *%s*, size: %d, int.name: %s, digest: %s", sdata->ttmpfile, i, state->attachments[i].filename, state->attachments[i].type, state->attachments[i].size, state->attachments[i].internalname, state->attachments[i].digest);
 
-      p = determine_attachment_type(state->attachments[i].filename, state->attachments[i].type);
-      len = strlen(p);
+      char *p = determine_attachment_type(state->attachments[i].filename, state->attachments[i].type);
+      unsigned int len = strlen(p);
       if(strlen(sdata->attachments) < SMALLBUFSIZE-len-1 && !strstr(sdata->attachments, p)) memcpy(&(sdata->attachments[strlen(sdata->attachments)]), p, len);
 
       if(state->attachments[i].dumped == 1){
-         rec = 0;
+         int rec = 0;
          if(cfg->extract_attachments == 1 && state->bodylen < BIGBUFSIZE-1024) extract_attachment_content(sdata, state, state->attachments[i].aname, get_attachment_extractor_by_filename(state->attachments[i].filename), &rec, cfg);
 
          unlink(state->attachments[i].aname);
@@ -153,15 +151,13 @@ void storno_attachment(struct parser_state *state){
 
 
 void flush_attachment_buffer(struct parser_state *state, char *abuffer, unsigned int abuffersize){
-   int n64;
-   unsigned char b64buffer[MAXBUFSIZE];
-
    if(write(state->fd, abuffer, state->abufpos) == -1) syslog(LOG_PRIORITY, "ERROR: write(), %s, %d, %s", __func__, __LINE__, __FILE__);
 
    if(state->b64fd != -1){
       abuffer[state->abufpos] = '\0';
       if(state->base64 == 1){
-         n64 = base64_decode_attachment_buffer(abuffer, &b64buffer[0], sizeof(b64buffer));
+         unsigned char b64buffer[MAXBUFSIZE];
+         int n64 = base64_decode_attachment_buffer(abuffer, &b64buffer[0], sizeof(b64buffer));
          if(write(state->b64fd, b64buffer, n64) == -1) syslog(LOG_PRIORITY, "ERROR: write(), %s, %d, %s", __func__, __LINE__, __FILE__);
       }
       else if(write(state->b64fd, abuffer, state->abufpos) == -1){
@@ -175,9 +171,8 @@ void flush_attachment_buffer(struct parser_state *state, char *abuffer, unsigned
 
 
 int parse_line(char *buf, struct parser_state *state, struct session_data *sdata, int take_into_pieces, char *writebuffer, unsigned int writebuffersize, char *abuffer, unsigned int abuffersize, struct data *data, struct config *cfg){
-   char *p, puf[SMALLBUFSIZE];
-   char tmpbuf[MAXBUFSIZE];
-   int writelen, boundary_line=0, result;
+   char *p;
+   int boundary_line=0;
    unsigned int len;
 
    if(cfg->debug == 1) printf("line: %s", buf);
@@ -284,8 +279,9 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
                syslog(LOG_PRIORITY, "%s: error opening %s", sdata->ttmpfile, state->attachments[state->n_attachments].internalname);
             }
             else {
+               char puf[SMALLBUFSIZE];
                snprintf(puf, sizeof(puf)-1, "ATTACHMENT_POINTER_%s.a%d_XXX_PILER", sdata->ttmpfile, state->n_attachments);
-               writelen = strlen(puf);
+               int writelen = strlen(puf);
                if(writelen + state->writebufpos > writebuffersize-1){
                   if(write(state->mfd, writebuffer, state->writebufpos) == -1) syslog(LOG_PRIORITY, "ERROR: write(), %s, %d, %s", __func__, __LINE__, __FILE__);
                   state->writebufpos = 0;
@@ -637,7 +633,8 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
 
    /* encode the body if it's not utf-8 encoded */
    if(state->message_state == MSG_BODY && state->utf8 != 1){
-      result = utf8_encode(buf, strlen(buf), &tmpbuf[0], sizeof(tmpbuf), state->charset);
+      char tmpbuf[MAXBUFSIZE];
+      int result = utf8_encode(buf, strlen(buf), &tmpbuf[0], sizeof(tmpbuf), state->charset);
       if(result == OK) snprintf(buf, MAXBUFSIZE-1, "%s", tmpbuf);
    }
 
diff --git a/src/parser_utils.c b/src/parser_utils.c
index e88d19fb..7481f2db 100644
--- a/src/parser_utils.c
+++ b/src/parser_utils.c
@@ -114,7 +114,7 @@ long get_local_timezone_offset(){
 
 
 time_t parse_date_header(char *datestr){
-   int n=0, len;
+   int n=0;
    long offset=0;
    time_t ts=0;
    char *p, *q, *r, *tz, s[SMALLBUFSIZE], tzh[4], tzm[3];
@@ -150,7 +150,7 @@ time_t parse_date_header(char *datestr){
    do {
       p = split_str(p, " ", s, sizeof(s)-1);
 
-      len = strlen(s);
+      int len = strlen(s);
 
       if(len > 0){
          n++;
@@ -264,7 +264,7 @@ time_t parse_date_header(char *datestr){
 
 
 int extract_boundary(char *p, struct parser_state *state){
-   char *q, *q2;
+   char *q;
 
    p += strlen("boundary");
 
@@ -291,7 +291,7 @@ int extract_boundary(char *p, struct parser_state *state){
             break;
       }
 
-      q2 = strchr(p, ';');
+      char *q2 = strchr(p, ';');
       if(q2) *q2 = '\0';
 
       q = strrchr(p, '"');
@@ -315,14 +315,13 @@ int extract_boundary(char *p, struct parser_state *state){
 
 
 void fixupEncodedHeaderLine(char *buf, int buflen){
-   char *p, *q, *r, *s, *e, *end;
+   char *q, *r, *s, *e, *end;
    /*
     * I thought SMALLBUFSIZE would be enough for v, encoding and tmpbuf(2*),
     * but then I saw a 6-7000 byte long subject line, so I've switched to MAXBUFSIZE
     */
    char v[MAXBUFSIZE], u[MAXBUFSIZE], puf[MAXBUFSIZE], encoding[MAXBUFSIZE], tmpbuf[2*MAXBUFSIZE];
    int need_encoding, ret, prev_encoded=0, n_tokens=0;
-   int b64=0, qp=0;
 
    if(buflen < 5) return;
 
@@ -333,7 +332,7 @@ void fixupEncodedHeaderLine(char *buf, int buflen){
    do {
       q = split_str(q, " ", v, sizeof(v)-1);
 
-      p = v;
+      char *p = v;
 
       do {
          memset(u, 0, sizeof(u));
@@ -349,7 +348,7 @@ void fixupEncodedHeaderLine(char *buf, int buflen){
           *    Happy New Year! =?utf-8?q?=F0=9F=8E=86?=
           */
 
-         b64 = qp = 0;
+         int b64=0, qp=0;
          memset(encoding, 0, sizeof(encoding));
 
          r = strstr(p, "=?");
@@ -446,9 +445,9 @@ void fixupEncodedHeaderLine(char *buf, int buflen){
 
 void fixupSoftBreakInQuotedPritableLine(char *buf, struct parser_state *state){
    int i=0;
-   char *p, puf[MAXBUFSIZE];
 
    if(strlen(state->qpbuf) > 0){
+      char puf[MAXBUFSIZE];
       memset(puf, 0, sizeof(puf));
       snprintf(puf, sizeof(puf)-1, "%s%s", state->qpbuf, buf);
       snprintf(buf, MAXBUFSIZE-1, "%s", puf);
@@ -461,7 +460,7 @@ void fixupSoftBreakInQuotedPritableLine(char *buf, struct parser_state *state){
    }
 
    if(i == 1){
-      p = strrchr(buf, ' ');
+      char *p = strrchr(buf, ' ');
       if(p){
          memset(state->qpbuf, 0, MAX_TOKEN_LEN);
          if(strlen(p) < MAX_TOKEN_LEN-1){
@@ -475,9 +474,8 @@ void fixupSoftBreakInQuotedPritableLine(char *buf, struct parser_state *state){
 
 
 void fixupBase64EncodedLine(char *buf, struct parser_state *state){
-   char *p, puf[MAXBUFSIZE];
-
    if(strlen(state->miscbuf) > 0){
+      char puf[MAXBUFSIZE];
       memset(puf, 0, sizeof(puf));
       strncpy(puf, state->miscbuf, sizeof(puf)-strlen(puf)-1);
       strncat(puf, buf, sizeof(puf)-strlen(puf)-1);
@@ -489,7 +487,7 @@ void fixupBase64EncodedLine(char *buf, struct parser_state *state){
    }
 
    if(buf[strlen(buf)-1] != '\n'){
-      p = strrchr(buf, ' ');
+      char *p = strrchr(buf, ' ');
       if(p){
          memcpy(&(state->miscbuf[0]), p+1, MAX_TOKEN_LEN-1);
          *p = '\0';
@@ -576,7 +574,7 @@ void markHTML(char *buf, struct parser_state *state){
 
 
 int appendHTMLTag(char *buf, char *htmlbuf, int pos, struct parser_state *state){
-   char *p, html[SMALLBUFSIZE];
+   char html[SMALLBUFSIZE];
    int len;
 
    if(pos == 0 && strncmp(htmlbuf, "style ", 6) == 0) state->style = 1;
@@ -594,7 +592,7 @@ int appendHTMLTag(char *buf, char *htmlbuf, int pos, struct parser_state *state)
    len = strlen(html);
 
    if(len > 8 && strchr(html, '=')){
-      p = strstr(html, "cid:");
+      char *p = strstr(html, "cid:");
       if(p){
          *(p+3) = '\0';
          strncat(html, " ", SMALLBUFSIZE-1);
@@ -697,11 +695,9 @@ int does_it_seem_like_an_email_address(char *email){
 
 
 void add_recipient(char *email, unsigned int len, struct session_data *sdata, struct parser_state *state, struct data *data, struct config *cfg){
-   char *q;
-
    if(findnode(state->rcpt, email) == NULL){
 
-      q = strchr(email, '@');
+      char *q = strchr(email, '@');
 
       /* skip any address matching ...@cfg->hostid, 2013.10.29, SJ */
       if(q && strncmp(q+1, cfg->hostid, cfg->hostid_len) == 0){
@@ -769,7 +765,7 @@ void degenerateToken(unsigned char *p){
    int i=1, d=0, dp=0;
    unsigned char *s;
 
-   /* quit if this the string does not end with a punctuation character */
+   /* quit if the string does not end with a punctuation character */
 
    if(!ispunct(*(p+strlen((char *)p)-1)))
       return;
@@ -825,8 +821,7 @@ void fixURL(char *buf, int buflen){
 
 
 void extractNameFromHeaderLine(char *s, char *name, char *resultbuf, int resultbuflen){
-   int extended=0;
-   char buf[SMALLBUFSIZE], puf[SMALLBUFSIZE], *p, *q, *encoding;
+   char buf[SMALLBUFSIZE], *p, *q;
 
    snprintf(buf, sizeof(buf)-1, "%s", s);
 
@@ -862,6 +857,8 @@ void extractNameFromHeaderLine(char *s, char *name, char *resultbuf, int resultb
        *
        */
 
+      int extended=0;
+
       p += strlen(name);
       if(*p == '*'){
          extended = 1;
@@ -889,7 +886,7 @@ void extractNameFromHeaderLine(char *s, char *name, char *resultbuf, int resultb
 
 
          if(extended == 1){
-            encoding = p;
+            char *encoding = p;
             q = strchr(p, '\'');
             if(q){
                *q = '\0';
@@ -906,6 +903,7 @@ void extractNameFromHeaderLine(char *s, char *name, char *resultbuf, int resultb
                snprintf(resultbuf, resultbuflen-2, "%s", p);
          }
          else {
+            char puf[SMALLBUFSIZE];
             snprintf(puf, sizeof(puf)-1, "%s", p);
             fixupEncodedHeaderLine(puf, sizeof(puf));
 
@@ -919,8 +917,6 @@ void extractNameFromHeaderLine(char *s, char *name, char *resultbuf, int resultb
 
 
 char *determine_attachment_type(char *filename, char *type){
-   char *p;
-
    if(strncasecmp(type, "text/", strlen("text/")) == 0) return "text,";
    if(strncasecmp(type, "image/", strlen("image/")) == 0) return "image,";
    if(strncasecmp(type, "audio/", strlen("audio/")) == 0) return "audio,";
@@ -951,7 +947,7 @@ char *determine_attachment_type(char *filename, char *type){
 
    if(strncasecmp(type, "application/", 12) == 0){
 
-      p = strrchr(filename, '.');
+      char *p = strrchr(filename, '.');
       if(p){
          p++;
 
@@ -1013,14 +1009,13 @@ char *get_attachment_extractor_by_filename(char *filename){
 
 
 void parse_reference(struct parser_state *state, char *s){
-   int len;
    char puf[SMALLBUFSIZE];
 
    if(strlen(state->reference) > 10) return;
 
    do {
       s = split_str(s, " ", puf, sizeof(puf)-1);
-      len = strlen(puf);
+      int len = strlen(puf);
 
       if(len > 10 && len < SMALLBUFSIZE-1){
          memcpy(&(state->reference[strlen(state->reference)]), puf, len);
@@ -1046,12 +1041,11 @@ int base64_decode_attachment_buffer(char *p, unsigned char *b, int blen){
 
 
 void fix_plus_sign_in_email_address(char *puf, char **at_sign, unsigned int *len){
-   int n;
    char *r;
 
    r = strchr(puf, '+');
    if(r){
-      n = strlen(*at_sign);
+      int n = strlen(*at_sign);
       memmove(r, *at_sign, n);
       *(r+n) = '\0';
       *len = strlen(puf);
diff --git a/src/pop3.c b/src/pop3.c
index ec3a5e2c..c8ab4194 100644
--- a/src/pop3.c
+++ b/src/pop3.c
@@ -63,7 +63,7 @@ int connect_to_pop3_server(struct data *data){
 
 
 void get_number_of_total_messages(struct data *data){
-   char *p, buf[MAXBUFSIZE];
+   char buf[MAXBUFSIZE];
 
    data->import->total_messages = 0;
 
@@ -73,7 +73,7 @@ void get_number_of_total_messages(struct data *data){
    recvtimeoutssl(data->net, buf, sizeof(buf));
 
    if(strncmp(buf, "+OK ", 4) == 0){
-      p = strchr(&buf[4], ' ');
+      char *p = strchr(&buf[4], ' ');
       if(p){
          *p = '\0';
          data->import->total_messages = atoi(&buf[4]);
@@ -86,7 +86,7 @@ void get_number_of_total_messages(struct data *data){
 
 
 int pop3_download_email(struct data *data, int i){
-   int n, fd, pos=0, readlen=0, lastpos=0, nreads=0;
+   int n, fd, pos=0, lastpos=0, nreads=0;
    char *p, buf[MAXBUFSIZE];
    char aggrbuf[3*MAXBUFSIZE];
 
@@ -108,7 +108,6 @@ int pop3_download_email(struct data *data, int i){
 
    while((n = recvtimeoutssl(data->net, buf, sizeof(buf))) > 0){
       nreads++;
-      readlen += n;
 
       if(nreads == 1){
 
@@ -167,7 +166,6 @@ void pop3_delete_message(struct data *data, int i){
 
 
 void process_pop3_emails(struct session_data *sdata, struct data *data, struct config *cfg){
-   int i=0, rc=ERR;
    char buf[MAXBUFSIZE];
 
    data->import->processed_messages = 0;
@@ -178,12 +176,12 @@ void process_pop3_emails(struct session_data *sdata, struct data *data, struct c
 
    if(data->import->total_messages <= 0) return;
 
-   for(i=data->import->start_position; i<=data->import->total_messages; i++){
+   for(int i=data->import->start_position; i<=data->import->total_messages; i++){
       if(pop3_download_email(data, i) == OK){
          if(data->quiet == 0){ printf("processed: %7d [%3d%%]\r", data->import->processed_messages, 100*i/data->import->total_messages); fflush(stdout); }
 
          if(data->import->dryrun == 0){
-            rc = import_message(sdata, data, cfg);
+            int rc = import_message(sdata, data, cfg);
 
             if(data->import->remove_after_import == 1 && rc == OK){
                pop3_delete_message(data, i);
diff --git a/src/reindex.c b/src/reindex.c
index b84a9891..2382d9f5 100644
--- a/src/reindex.c
+++ b/src/reindex.c
@@ -74,10 +74,7 @@ uint64 get_max_meta_id(struct session_data *sdata){
 
 
 uint64 retrieve_email_by_metadata_id(struct session_data *sdata, struct data *data, uint64 from_id, uint64 to_id, struct config *cfg){
-   FILE *f;
-   char filename[SMALLBUFSIZE];
    char s[SMALLBUFSIZE];
-   int rc=0;
    uint64 stored_id=0, reindexed=0, delta;
    struct parser_state state;
    struct sql sql;
@@ -111,12 +108,12 @@ uint64 retrieve_email_by_metadata_id(struct session_data *sdata, struct data *da
       while(p_fetch_results(&sql) == OK){
 
          if(stored_id > 0){
-
+            char filename[SMALLBUFSIZE];
             snprintf(filename, sizeof(filename)-1, "%llu.eml", stored_id);
 
-            f = fopen(filename, "w");
+            FILE *f = fopen(filename, "w");
             if(f){
-               rc = retrieve_email_from_archive(sdata, f, cfg);
+               int rc = retrieve_email_from_archive(sdata, f, cfg);
                fclose(f);
 
                if(rc){
@@ -162,7 +159,7 @@ uint64 retrieve_email_by_metadata_id(struct session_data *sdata, struct data *da
 
 
 int main(int argc, char **argv){
-   int c, all=0;
+   int all=0;
    uint64 from_id=0, to_id=0, n=0;
    char *configfile=CONFIG_FILE, *folder=NULL;
    struct session_data sdata;
@@ -171,7 +168,7 @@ int main(int argc, char **argv){
 
 
    while(1){
-      c = getopt(argc, argv, "c:f:t:F:pahv?");
+      int c = getopt(argc, argv, "c:f:t:F:pahv?");
 
       if(c == -1) break;
 
@@ -211,7 +208,7 @@ int main(int argc, char **argv){
    }
 
 
-   if(all == 0 && (from_id <= 0 || to_id <= 0) ) usage();
+   if(all == 0 && (from_id == 0 || to_id == 0) ) usage();
 
    if(!can_i_write_directory(NULL)) __fatal("cannot write current directory!");
 
diff --git a/src/rules.c b/src/rules.c
index d78472e2..ec667420 100644
--- a/src/rules.c
+++ b/src/rules.c
@@ -196,13 +196,14 @@ struct rule *create_rule_item(struct rule_cond *rule_cond){
 
 int count_match(struct rule *p, struct parser_state *state, int size, int spam){
    int ismatch=0;
-   size_t nmatch=0;
 
    ismatch += check_spam_rule(spam, p->spam);
    ismatch += check_size_rule(size, p->size, p->_size);
    ismatch += check_attachment_rule(state, p);
 
    if(p->compiled == 1){
+      size_t nmatch=0;
+
       if(p->emptyfrom == 1){
          ismatch += RULE_UNDEF;
       }
@@ -338,7 +339,6 @@ int check_spam_rule(int is_spam, int spam){
 int check_attachment_rule(struct parser_state *state, struct rule *rule){
    int i;
    size_t nmatch=0;
-   int ismatch = 0;
 
    // If no attachment rule, then return RULE_UNDEF
    if(rule->emptyaname == 1 && rule->emptyatype == 1 && rule->attachment_size == 0) return RULE_UNDEF;
@@ -348,7 +348,7 @@ int check_attachment_rule(struct parser_state *state, struct rule *rule){
 
 
    for(i=1; i<=state->n_attachments; i++){
-      ismatch = 0;
+      int ismatch = 0;
 
       if(rule->emptyaname == 0){
          if(regexec(&(rule->attachment_name), state->attachments[i].filename, nmatch, NULL, 0) == 0)
@@ -379,34 +379,32 @@ void initrules(struct node *xhash[]){
 
 
 void clearrules(struct node *xhash[]){
-   struct node *p, *q;
+   struct node *q;
    struct rule *rule;
 
    q = xhash[0];
 
    while(q != NULL){
-      p = q;
+      struct node *p = q;
       q = q->r;
 
-      if(p){
-         if(p->str){
-            rule = (struct rule*)p->str;
+      if(p->str){
+         rule = (struct rule*)p->str;
 
-            regfree(&(rule->from));
-            regfree(&(rule->to));
-            regfree(&(rule->subject));
-            regfree(&(rule->body));
-            regfree(&(rule->attachment_name));
-            regfree(&(rule->attachment_type));
+         regfree(&(rule->from));
+         regfree(&(rule->to));
+         regfree(&(rule->subject));
+         regfree(&(rule->body));
+         regfree(&(rule->attachment_name));
+         regfree(&(rule->attachment_type));
 
-            free(rule->rulestr);
+         free(rule->rulestr);
 
-            if(rule->domain) free(rule->domain);
+         if(rule->domain) free(rule->domain);
 
-            free(rule);
-         }
-         free(p);
+         free(rule);
       }
+      free(p);
    }
 
    xhash[0] = NULL;
diff --git a/src/session.c b/src/session.c
index 8d1c7a79..b1cacb7e 100644
--- a/src/session.c
+++ b/src/session.c
@@ -30,7 +30,6 @@ int is_blocked_by_tcp_wrappers(int sd){
 
 
 int start_new_session(struct smtp_session **sessions, int socket, int *num_connections, struct config *cfg){
-   char smtp_banner[SMALLBUFSIZE];
    int slot;
 
    /*
@@ -57,6 +56,8 @@ int start_new_session(struct smtp_session **sessions, int socket, int *num_conne
       sessions[slot] = malloc(sizeof(struct smtp_session));
       if(sessions[slot]){
          init_smtp_session(sessions[slot], slot, socket, cfg);
+
+         char smtp_banner[SMALLBUFSIZE];
          snprintf(smtp_banner, sizeof(smtp_banner)-1, SMTP_RESP_220_BANNER, cfg->hostid);
          send(socket, smtp_banner, strlen(smtp_banner), 0);
 
@@ -233,14 +234,12 @@ void handle_data(struct smtp_session *session, char *readbuf, int readlen, struc
 
 
 void write_envelope_addresses(struct smtp_session *session, struct config *cfg){
-   int i;
-   char *p, s[SMALLBUFSIZE];
-
    if(session->fd == -1) return;
 
-   for(i=0; i<session->num_of_rcpt_to; i++){
-      p = strchr(session->rcptto[i], '@');
+   for(int i=0; i<session->num_of_rcpt_to; i++){
+      char *p = strchr(session->rcptto[i], '@');
       if(p && strncmp(p+1, cfg->hostid, cfg->hostid_len)){
+         char s[SMALLBUFSIZE];
          snprintf(s, sizeof(s)-1, "X-Piler-Envelope-To: %s\n", session->rcptto[i]);
          if(write(session->fd, s, strlen(s)) == -1) syslog(LOG_PRIORITY, "ERROR: %s: cannot write envelope to address", session->ttmpfile);
       }
diff --git a/src/smtp.c b/src/smtp.c
index 4ce18239..bd40af02 100644
--- a/src/smtp.c
+++ b/src/smtp.c
@@ -72,15 +72,15 @@ void process_smtp_command(struct smtp_session *session, char *buf, struct config
 
 
 void process_data(struct smtp_session *session, char *buf, int buflen){
-   int len=0, written=0, n_writes=0;
-
    if(session->last_data_char == '\n' && strcmp(buf, ".\r\n") == 0){
       process_command_period(session);
    }
    else {
       // write line to file
+      int written=0, n_writes=0;
+
       while(written < buflen) {
-         len = write(session->fd, buf+written, buflen-written);
+         int len = write(session->fd, buf+written, buflen-written);
          n_writes++;
 
          if(len > 0){
@@ -98,7 +98,6 @@ void process_data(struct smtp_session *session, char *buf, int buflen){
 
 void wait_for_ssl_accept(struct smtp_session *session){
    int rc;
-   char ssl_error[SMALLBUFSIZE];
 
    if(session->cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "waiting for ssl handshake");
 
@@ -115,6 +114,8 @@ void wait_for_ssl_accept(struct smtp_session *session){
    }
 
    if(session->cfg->verbosity >= _LOG_DEBUG || session->net.use_ssl == 0){
+      char ssl_error[SMALLBUFSIZE];
+
       ERR_error_string_n(ERR_get_error(), ssl_error, SMALLBUFSIZE);
       syslog(LOG_PRIORITY, "SSL_accept() result, rc=%d, errorcode: %d, error text: %s",
              rc, SSL_get_error(session->net.ssl, rc), ssl_error);
diff --git a/src/stats.c b/src/stats.c
index 68454a84..4b75db71 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -134,15 +134,15 @@ void sphinx_queries(struct session_data *sdata, struct stats *stats){
 
 void count_error_emails(struct stats *stats){
    DIR *dir;
-   struct dirent *de;
    struct stat st;
-   char buf[SMALLBUFSIZE];
 
    dir = opendir(ERROR_DIR);
    if(dir){
+      struct dirent *de;
       while((de = readdir(dir))){
          if(strcmp(de->d_name, ".") == 0 || strcmp(de->d_name, "..") == 0) continue;
 
+         char buf[SMALLBUFSIZE];
          snprintf(buf, sizeof(buf)-1, "%s/%s", ERROR_DIR, de->d_name);
 
          if(stat(buf, &st) == 0 && S_ISREG(st.st_mode)){
diff --git a/src/store.c b/src/store.c
index dc3839a1..d903282d 100644
--- a/src/store.c
+++ b/src/store.c
@@ -213,12 +213,11 @@ ENDE:
 
 
 int remove_stored_message_files(struct session_data *sdata, struct parser_state *state, struct config *cfg){
-   int i;
    char s[SMALLBUFSIZE];
 
    if(state->n_attachments > 0){
 
-      for(i=1; i<=state->n_attachments; i++){
+      for(int i=1; i<=state->n_attachments; i++){
          snprintf(s, sizeof(s)-1, "%s/%02x/%c%c%c/%c%c/%c%c/%s.a%d", cfg->queuedir, cfg->server_id, sdata->ttmpfile[8], sdata->ttmpfile[9], sdata->ttmpfile[10], sdata->ttmpfile[RND_STR_LEN-4], sdata->ttmpfile[RND_STR_LEN-3], sdata->ttmpfile[RND_STR_LEN-2], sdata->ttmpfile[RND_STR_LEN-1], sdata->ttmpfile, i);
 
          if(cfg->verbosity >= _LOG_DEBUG) syslog(LOG_PRIORITY, "%s: unlinking %s", sdata->ttmpfile, s);
diff --git a/src/tai.c b/src/tai.c
index 344ee094..00f95465 100644
--- a/src/tai.c
+++ b/src/tai.c
@@ -4,7 +4,6 @@
 #include <sys/time.h>
 #include "tai.h"
 
-static char hex[16] = "0123456789abcdef";
 
 
 void tai_pack(char *s, struct tai *t){
@@ -50,21 +49,3 @@ void taia_now(struct taia *t){
    t->nano = 1000 * now.tv_usec + 500;
    t->atto = 0;
 }
-
-
-void tai_timestamp(char *s){
-   struct tai now;
-   char nowpack[TAI_PACK];
-   int i;
-
-   now.x = 4611686018427387914ULL + (uint64)time((long *) 0);
-
-   tai_pack(nowpack, &now);
-
-   for (i = 0;i < 8;++i) {
-      *(s+i*2) = hex[(nowpack[i] >> 4) & 15];
-      *(s+i*2+1) = hex[nowpack[i] & 15];
-   }
-
-   *(s+2*TAI_PACK) = '\0';
-}
diff --git a/src/test.c b/src/test.c
index 497c77fb..91e2bcfc 100644
--- a/src/test.c
+++ b/src/test.c
@@ -28,7 +28,7 @@ void usage(){
 
 
 int main(int argc, char **argv){
-   int i, c;
+   int i;
    time_t retention_seconds=0;
    struct stat st;
    struct session_data sdata;
@@ -57,9 +57,9 @@ int main(int argc, char **argv){
       int option_index = 0;
 
 
-      c = getopt_long(argc, argv, "c:m:a:hv?", long_options, &option_index);
+      int c = getopt_long(argc, argv, "c:m:a:hv?", long_options, &option_index);
 #else
-      c = getopt(argc, argv, "c:m:a:hv?");
+      int c = getopt(argc, argv, "c:m:a:hv?");
 #endif
 
       if(c == -1) break;
diff --git a/suppressions.txt b/suppressions.txt
new file mode 100644
index 00000000..a50ff542
--- /dev/null
+++ b/suppressions.txt
@@ -0,0 +1,13 @@
+identicalConditionAfterEarlyExit:src/tokenizer.c:40
+invalidPrintfArgType_s:src/extract.c:175
+invalidPrintfArgType_s:src/misc.c:39
+invalidPrintfArgType_s:src/misc.c:43
+invalidPrintfArgType_s:src/misc.c:47
+invalidPrintfArgType_s:src/misc.c:51
+invalidPrintfArgType_s:src/misc.c:55
+invalidPrintfArgType_s:src/misc.c:59
+invalidPrintfArgType_s:src/misc.c:63
+redundantAssignment:src/imap.c:47
+unusedFunction:src/sig.c:33
+unusedFunction:src/sig.c:38
+unusedFunction:src/sig.c:44
diff --git a/unit_tests/check_digest.c b/unit_tests/check_digest.c
index 23f490a9..9d5bf37d 100644
--- a/unit_tests/check_digest.c
+++ b/unit_tests/check_digest.c
@@ -5,7 +5,7 @@
 #include "test.h"
 
 
-struct digest_test tests[] = {
+struct digest_test emls[] = {
    {"1.eml", "7fa4f06f7085986007454b374f6685e4cf838d9e9f8878f3cba89cfe98e29f56", "bbbafb22e2d4c035584a5024e9d4feaf32172559b4d7cacc8b7af4bd548da53e"},
    {"2.eml", "668cb3b91b944af786667323442576b9813d65f3cd3bc33e9d5da303c79de038", "de90475409dd6ab24e80c1b7a987715c40fe8d28d91337b7f063b477159c7b3c"},
    {"3.eml", "0d546d4cb4a8ce74ea5fd4cc51dbb4ebeaa7542f1c691817579da7eeab8d4771", "f585d011340d292ee52ddedb07cda662a8f1e46329d14a2ce92dca0604387bab"},
@@ -41,9 +41,9 @@ static void test_digest_file(){
    unsigned int i;
    char digest[2*DIGEST_LENGTH+1];
 
-   for(i=0; i<sizeof(tests)/sizeof(struct digest_test); i++){
-      digest_file(tests[i].s, &digest[0]);
-      assert(strcmp(digest, tests[i].digest2) == 0 && "test_digest_file()");
+   for(i=0; i<sizeof(emls)/sizeof(struct digest_test); i++){
+      digest_file(emls[i].s, &digest[0]);
+      assert(strcmp(digest, emls[i].digest2) == 0 && "test_digest_file()");
    }
 
    printf("test_digest_file() OK\n");
@@ -64,8 +64,8 @@ static void test_make_digests(struct config *cfg){
    }
 
 
-   for(i=0; i<sizeof(tests)/sizeof(struct digest_test); i++){
-      if(setup_and_parse_message(&sdata, &state, &data, tests[i].s, cfg) == 1){
+   for(i=0; i<sizeof(emls)/sizeof(struct digest_test); i++){
+      if(setup_and_parse_message(&sdata, &state, &data, emls[i].s, cfg) == 1){
          continue;
       }
 
@@ -79,8 +79,8 @@ static void test_make_digests(struct config *cfg){
 
       unlink(sdata.tmpframe);
 
-      assert(strcmp(sdata.bodydigest, tests[i].digest1) == 0 && "test_make_digests()");
-      assert(strcmp(sdata.digest, tests[i].digest2) == 0 && "test_make_digests()");
+      assert(strcmp(sdata.bodydigest, emls[i].digest1) == 0 && "test_make_digests()");
+      assert(strcmp(sdata.digest, emls[i].digest2) == 0 && "test_make_digests()");
 
    }
 
diff --git a/unit_tests/check_misc.c b/unit_tests/check_misc.c
index bc76bc73..923f6a30 100644
--- a/unit_tests/check_misc.c
+++ b/unit_tests/check_misc.c
@@ -123,7 +123,7 @@ static void test_create_id(){
 static void test_split(){
    unsigned int i;
    int result;
-   char *p, buf[SMALLBUFSIZE];
+   char buf[SMALLBUFSIZE];
 
    struct test_data_s_s_i test_data_s_s_i[] = {
       { "hello\nworld\n", "world\n", 1 },
@@ -135,7 +135,7 @@ static void test_split(){
    TEST_HEADER();
 
    for(i=0; i<sizeof(test_data_s_s_i)/sizeof(struct test_data_s_s_i); i++){
-      p = split(test_data_s_s_i[i].s1, '\n', buf, sizeof(buf)-1, &result);
+      char *p = split(test_data_s_s_i[i].s1, '\n', buf, sizeof(buf)-1, &result);
 
       if(p){ ASSERT(strcmp(buf, "hello") == 0 && strcmp(p, test_data_s_s_i[i].s2) == 0 && result == test_data_s_s_i[i].result, test_data_s_s_i[i].s1); }
       else { ASSERT(p == NULL && result == test_data_s_s_i[i].result, test_data_s_s_i[i].s1); }
@@ -147,7 +147,7 @@ static void test_split(){
 
 static void test_split_str(){
    unsigned int i;
-   char *p, buf[SMALLBUFSIZE];
+   char buf[SMALLBUFSIZE];
 
    struct test_data_s_s test_data_s_s[] = {
       { "aaaXXbbbXX", "bbbXX" },
@@ -159,7 +159,7 @@ static void test_split_str(){
    TEST_HEADER();
 
    for(i=0; i<sizeof(test_data_s_s)/sizeof(struct test_data_s_s); i++){
-      p = split_str(test_data_s_s[i].s, "XX", buf, sizeof(buf)-1);
+      char *p = split_str(test_data_s_s[i].s, "XX", buf, sizeof(buf)-1);
 
       if(p){ ASSERT(strcmp(buf, "aaa") == 0 && strcmp(test_data_s_s[i].result, p) == 0, test_data_s_s[i].s); }
       else { ASSERT(strcmp(buf, "aaa") == 0 && p == NULL, test_data_s_s[i].s); }
diff --git a/unit_tests/check_parser_utils.c b/unit_tests/check_parser_utils.c
index 5611fe12..5bfe7c34 100644
--- a/unit_tests/check_parser_utils.c
+++ b/unit_tests/check_parser_utils.c
@@ -25,7 +25,6 @@ struct str_pair {
 static void test_parse_date_header(){
    unsigned int i;
    struct config cfg;
-   time_t delta;
    struct date_test date_test[] = {
       {"Date: Mon, 02 Nov 2015 09:39:31 -0000", 1446457171},
       {"Date: Mon, 2 Nov 2015 10:39:45 +0100", 1446457185},
@@ -49,7 +48,7 @@ static void test_parse_date_header(){
    TEST_HEADER();
 
    for(i=0; i<sizeof(date_test)/sizeof(struct date_test); i++){
-      delta = parse_date_header(date_test[i].date_str) - date_test[i].timestamp;
+      time_t delta = parse_date_header(date_test[i].date_str) - date_test[i].timestamp;
       ASSERT(delta <= 3600 && delta >= -3600, date_test[i].date_str);
    }
 
diff --git a/unit_tests/smtp.c b/unit_tests/smtp.c
index acb6337d..31914c74 100644
--- a/unit_tests/smtp.c
+++ b/unit_tests/smtp.c
@@ -27,10 +27,10 @@ void connect_to_smtp_server(char *server, int port, struct data *data){
    char port_string[8], buf[MAXBUFSIZE];
    struct addrinfo hints, *res;
 
-   data->net->socket = -1;
-
    if(data == NULL) return;
 
+   data->net->socket = -1;
+
    snprintf(port_string, sizeof(port_string)-1, "%d", port);
 
    memset(&hints, 0, sizeof(hints));
@@ -301,7 +301,7 @@ static void test_smtp_commands_period_command_in_its_own_packet(char *server, in
 
 
 int main(int argc, char **argv){
-   int c, port=25;
+   int port=25;
    char *server=NULL;
    struct data data;
    struct net net;
@@ -325,9 +325,9 @@ int main(int argc, char **argv){
 
       int option_index = 0;
 
-      c = getopt_long(argc, argv, "c:s:p:t:lh?", long_options, &option_index);
+      int c = getopt_long(argc, argv, "c:s:p:t:lh?", long_options, &option_index);
 #else
-      c = getopt(argc, argv, "c:s:p:t:lh?");
+      int c = getopt(argc, argv, "c:s:p:t:lh?");
 #endif