mirror of
https://bitbucket.org/jsuto/piler.git
synced 2024-12-25 09:10:12 +01:00
improved attachment extraction
This commit is contained in:
SJ
parent
f608d9df3d
commit
f0963cdfbd
@ -12,9 +12,9 @@
|
||||
#define PROGNAME "piler"
|
||||
#define PILERGETD_PROGNAME "pilergetd"
|
||||
|
||||
#define VERSION "1.1.1"
|
||||
#define VERSION "1.2.0"
|
||||
|
||||
#define BUILD 904
|
||||
#define BUILD 908
|
||||
|
||||
#define HOSTID "mailarchiver"
|
||||
|
||||
|
||||
162
src/extract.c
162
src/extract.c
@ -4,6 +4,7 @@
|
||||
#include <unistd.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/stat.h>
|
||||
#include <dirent.h>
|
||||
#include <fcntl.h>
|
||||
@ -14,6 +15,8 @@
|
||||
#include <zip.h>
|
||||
#endif
|
||||
|
||||
#define die(e) do { syslog(LOG_INFO, "error: helper: %s", e); exit(EXIT_FAILURE); } while (0);
|
||||
|
||||
|
||||
void remove_xml(char *buf, int *html){
|
||||
int i=0;
|
||||
@ -95,28 +98,8 @@ int extract_opendocument(struct session_data *sdata, struct _state *state, char
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* a safe filename contains the following characters:
|
||||
* space ( ),
|
||||
* dash (-),
|
||||
* dot (.),
|
||||
* underscore (_)
|
||||
* numbers and letters
|
||||
*/
|
||||
|
||||
int is_safe_filename(char *s){
|
||||
for(; *s; s++){
|
||||
if(*s != 32 && *s != 45 && *s != 46 && *s != 95 && !isalnum(*s)){
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
|
||||
int unzip_file(struct session_data *sdata, struct _state *state, char *filename, int *rec, struct __config *cfg){
|
||||
int errorp, i=0, len=0, fd, safe_to_process=0;
|
||||
int errorp, i=0, len=0, fd;
|
||||
char *p, extracted_filename[SMALLBUFSIZE], buf[MAXBUFSIZE];
|
||||
struct zip *z;
|
||||
struct zip_stat sb;
|
||||
@ -136,13 +119,8 @@ int unzip_file(struct session_data *sdata, struct _state *state, char *filename,
|
||||
if(ZIP_EM_NONE == sb.encryption_method) {
|
||||
|
||||
p = strrchr(sb.name, '.');
|
||||
safe_to_process = 0;
|
||||
|
||||
if(p) safe_to_process = is_safe_filename(p);
|
||||
|
||||
if(safe_to_process == 0) syslog(LOG_INFO, "%s: invalid filename in zip: '%s'", sdata->ttmpfile, (char*)sb.name);
|
||||
|
||||
if((int)sb.size > 0 && safe_to_process == 1 && strcmp(get_attachment_extractor_by_filename((char*)sb.name), "other")){
|
||||
if((int)sb.size > 0 && p && strcmp(get_attachment_extractor_by_filename((char*)sb.name), "other")){
|
||||
|
||||
snprintf(extracted_filename, sizeof(extracted_filename)-1, "%s-%d-%d%s", sdata->ttmpfile, *rec, i, p);
|
||||
|
||||
@ -173,7 +151,7 @@ int unzip_file(struct session_data *sdata, struct _state *state, char *filename,
|
||||
|
||||
}
|
||||
else {
|
||||
syslog(LOG_PRIORITY, "ERR: attachment ('%s') is in encrypted zip file", sb.name);
|
||||
syslog(LOG_PRIORITY, "error: attachment ('%s') is in encrypted zip file", sb.name);
|
||||
}
|
||||
|
||||
i++;
|
||||
@ -207,18 +185,13 @@ int extract_tnef(struct session_data *sdata, struct _state *state, char *filenam
|
||||
system(buf);
|
||||
|
||||
n = scandir(tmpdir, &namelist, NULL, alphasort);
|
||||
if(n < 0) syslog(LOG_INFO, "error reading %s", tmpdir);
|
||||
if(n < 0) syslog(LOG_INFO, "error: reading %s", tmpdir);
|
||||
else {
|
||||
while(n--){
|
||||
if(strcmp(namelist[n]->d_name, ".") && strcmp(namelist[n]->d_name, "..")){
|
||||
|
||||
snprintf(buf, sizeof(buf)-1, "%s/%s", tmpdir, namelist[n]->d_name);
|
||||
|
||||
if(is_safe_filename(namelist[n]->d_name) == 1){
|
||||
extract_attachment_content(sdata, state, buf, get_attachment_extractor_by_filename(buf), &rec, cfg);
|
||||
} else {
|
||||
syslog(LOG_INFO, "%s: not a safe file to process: '%s'", sdata->ttmpfile, namelist[n]->d_name);
|
||||
}
|
||||
|
||||
unlink(buf);
|
||||
}
|
||||
@ -261,57 +234,20 @@ void read_content_with_popen(struct session_data *sdata, struct _state *state, c
|
||||
}
|
||||
|
||||
|
||||
void kill_helper(){
|
||||
syslog(LOG_PRIORITY, "error: helper is killed by alarm");
|
||||
die("timeout for helper!");
|
||||
}
|
||||
|
||||
|
||||
void extract_attachment_content(struct session_data *sdata, struct _state *state, char *filename, char *type, int *rec, struct __config *cfg){
|
||||
char cmd[SMALLBUFSIZE], timeout[SMALLBUFSIZE];
|
||||
int link[2], n;
|
||||
pid_t pid;
|
||||
char outbuf[MAXBUFSIZE];
|
||||
|
||||
if(strcmp(type, "other") == 0) return;
|
||||
|
||||
memset(cmd, 0, sizeof(cmd));
|
||||
memset(timeout, 0, sizeof(timeout));
|
||||
|
||||
#ifdef TIMEOUT_BINARY
|
||||
if(cfg->helper_timeout > 0) snprintf(timeout, sizeof(timeout)-1, "%s %d ", TIMEOUT_BINARY, cfg->helper_timeout);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_PDFTOTEXT
|
||||
if(strcmp(type, "pdf") == 0) snprintf(cmd, sizeof(cmd)-1, "%s%s -enc UTF-8 %s -", timeout, HAVE_PDFTOTEXT, filename);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_CATDOC
|
||||
if(strcmp(type, "doc") == 0) snprintf(cmd, sizeof(cmd)-1, "%s%s -d utf-8 %s", timeout, HAVE_CATDOC, filename);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_CATPPT
|
||||
if(strcmp(type, "ppt") == 0) snprintf(cmd, sizeof(cmd)-1, "%s%s -d utf-8 %s", timeout, HAVE_CATPPT, filename);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_XLS2CSV
|
||||
if(strcmp(type, "xls") == 0) snprintf(cmd, sizeof(cmd)-1, "%s%s -d utf-8 %s", timeout, HAVE_XLS2CSV, filename);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_PPTHTML
|
||||
if(strcmp(type, "ppt") == 0) snprintf(cmd, sizeof(cmd)-1, "%s%s %s", timeout, HAVE_PPTHTML, filename);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_UNRTF
|
||||
if(strcmp(type, "rtf") == 0) snprintf(cmd, sizeof(cmd)-1, "%s%s --text %s", timeout, HAVE_UNRTF, filename);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_TNEF
|
||||
if(strcmp(type, "tnef") == 0){
|
||||
extract_tnef(sdata, state, filename, cfg);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
if(strlen(cmd) > 12){
|
||||
read_content_with_popen(sdata, state, cmd, cfg);
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
#ifdef HAVE_ZIP
|
||||
|
||||
if(strcmp(type, "odf") == 0){
|
||||
extract_opendocument(sdata, state, filename, "content.xml");
|
||||
return;
|
||||
@ -342,6 +278,72 @@ void extract_attachment_content(struct session_data *sdata, struct _state *state
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_TNEF
|
||||
if(strcmp(type, "tnef") == 0){
|
||||
extract_tnef(sdata, state, filename, cfg);
|
||||
return;
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
if(pipe(link) == -1){
|
||||
syslog(LOG_PRIORITY, "%s: cannot open link", sdata->ttmpfile);
|
||||
return;
|
||||
}
|
||||
|
||||
if((pid = fork()) == -1){
|
||||
syslog(LOG_PRIORITY, "%s: cannot fork", sdata->ttmpfile);
|
||||
return;
|
||||
}
|
||||
|
||||
if(pid == 0){
|
||||
dup2(link[1], STDOUT_FILENO);
|
||||
close(link[0]);
|
||||
close(link[1]);
|
||||
|
||||
alarm(cfg->helper_timeout);
|
||||
sig_catch(SIGALRM, kill_helper);
|
||||
|
||||
#ifdef HAVE_PDFTOTEXT
|
||||
if(strcmp(type, "pdf") == 0) execl(HAVE_PDFTOTEXT, HAVE_PDFTOTEXT, "-enc", "UTF-8", filename, "-", (char *) 0);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_CATDOC
|
||||
if(strcmp(type, "doc") == 0) execl(HAVE_CATDOC, HAVE_CATDOC, "-d", "utf-8", filename, (char *) 0);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_CATPPT
|
||||
if(strcmp(type, "ppt") == 0) execl(HAVE_CATPPT, HAVE_CATPPT, "-d", "utf-8", filename, (char *) 0);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_XLS2CSV
|
||||
if(strcmp(type, "xls") == 0) execl(HAVE_XLS2CSV, HAVE_XLS2CSV, "-d", "utf-8", filename, (char *) 0);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_PPTHTML
|
||||
if(strcmp(type, "ppt") == 0) execl(HAVE_PPTHTML, HAVE_PPTHTML, filename, (char *) 0);
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_UNRTF
|
||||
if(strcmp(type, "rtf") == 0) execl(HAVE_UNRTF, HAVE_UNRTF, "--text", filename, (char *) 0);
|
||||
#endif
|
||||
|
||||
die("execl");
|
||||
}
|
||||
else {
|
||||
close(link[1]);
|
||||
while((n = read(link[0], outbuf, sizeof(outbuf))) > 0){
|
||||
if(state->bodylen < BIGBUFSIZE-n-1){
|
||||
memcpy(&(state->b_body[state->bodylen]), outbuf, n);
|
||||
state->bodylen += n;
|
||||
}
|
||||
//printf("Output: %.*s\n", n, outbuf);
|
||||
}
|
||||
wait(NULL);
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user