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use proper boundary checking for to_domain string

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Signed-off-by: Janos SUTO <sj@acts.hu>
This commit is contained in:
Janos SUTO 2018-07-12 20:16:08 +00:00
parent bb6e0578b7
commit f72a87ca60
3 changed files with 10 additions and 2 deletions
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1
src/defs.h
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@ -207,6 +207,7 @@ struct parser_state {
int bodylen;
int tolen;
int todomainlen;
int journaltolen;
int retention;

10
src/parser.c
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@ -144,7 +144,7 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
unsigned char b64buffer[MAXBUFSIZE];
char tmpbuf[MAXBUFSIZE];
int n64, writelen, boundary_line=0, result;
unsigned int len;
unsigned int len, domainlen;
if(cfg->debug == 1) printf("line: %s", buf);
@ -170,6 +170,7 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
memset(state->b_to, 0, MAXBUFSIZE);
state->tolen = 0;
memset(state->b_to_domain, 0, SMALLBUFSIZE);
state->todomainlen = 0;
clearhash(state->rcpt);
clearhash(state->rcpt_domain);
@ -721,7 +722,12 @@ int parse_line(char *buf, struct parser_state *state, struct session_data *sdata
if(q){
if(findnode(state->rcpt_domain, q+1) == NULL){
addnode(state->rcpt_domain, q+1);
memcpy(&(state->b_to_domain[strlen(state->b_to_domain)]), q+1, strlen(q+1));
domainlen = strlen(q+1);
if(state->todomainlen < SMALLBUFSIZE-domainlen-1){
memcpy(&(state->b_to_domain[state->todomainlen]), q+1, domainlen);
state->todomainlen += domainlen;
}
}
}

1
src/parser_utils.c
View File

@ -96,6 +96,7 @@ void init_state(struct parser_state *state){
memset(state->b_journal_to, 0, MAXBUFSIZE);
state->tolen = 0;
state->todomainlen = 0;
state->bodylen = 0;
state->journaltolen = 0;