Module: sip-router Branch: master Commit: 997195274d2fc9d877fb2f3ff127e50773ebc4ab URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=9971952… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: Tue Jan 10 23:07:36 2012 +0100 sanity: new checks for duplicates of tag params in To/From - the values are used to identify SIP dialogs and must be unique - reported in FS#177 --- modules/sanity/mod_sanity.c | 8 ++++++-- modules/sanity/mod_sanity.h | 6 ++++-- modules/sanity/sanity.c | 43 +++++++++++++++++++++++++++++++++++++++++++ modules/sanity/sanity.h | 3 +++ 4 files changed, 56 insertions(+), 4 deletions(-) diff --git a/modules/sanity/mod_sanity.c b/modules/sanity/mod_sanity.c index b54d2e3..fd50a79 100644 --- a/modules/sanity/mod_sanity.c +++ b/modules/sanity/mod_sanity.c @@ -145,8 +145,8 @@ static int sanity_fixup(void** param, int param_no) { LOG(L_ERR, "sanity: failed to convert second integer argument\n"); return E_UNSPEC; } - if ((checks < 1) || (checks > (SANITY_DEFAULT_URI_CHECKS))) { - LOG(L_ERR, "sanity: second input parameter (%i) outside of valid range 1-%i\n", checks, SANITY_DEFAULT_URI_CHECKS); + if ((checks < 1) || (checks >= (SANITY_URI_MAX_CHECKS))) { + LOG(L_ERR, "sanity: second input parameter (%i) outside of valid range <1-%i\n", checks, SANITY_URI_MAX_CHECKS); return E_UNSPEC; } *param = (void*)(long)checks; @@ -215,6 +215,10 @@ int sanity_check(struct sip_msg* _msg, int msg_checks, int uri_checks) (ret = check_digest(_msg, uri_checks)) != SANITY_CHECK_PASSED) { goto done; } + if (SANITY_CHECK_DUPTAGS & msg_checks && + (ret = check_duptags(_msg)) != SANITY_CHECK_PASSED) { + goto done; + } done: return ret; diff --git a/modules/sanity/mod_sanity.h b/modules/sanity/mod_sanity.h index 5586dce..8221329 100644 --- a/modules/sanity/mod_sanity.h +++ b/modules/sanity/mod_sanity.h @@ -47,7 +47,8 @@ #define SANITY_PROXY_REQUIRE (1<<9) #define SANITY_PARSE_URIS (1<<10) #define SANITY_CHECK_DIGEST (1<<11) -#define SANITY_MAX_CHECKS (1<<12) /* Make sure this is the highest value */ +#define SANITY_CHECK_DUPTAGS (1<<12) +#define SANITY_MAX_CHECKS (1<<13) /* Make sure this is the highest value */ /* VIA_SIP_VERSION and VIA_PROTOCOL do not work yet * and PARSE_URIS is very expensive */ @@ -59,13 +60,14 @@ SANITY_CL | \ SANITY_EXPIRES_VALUE | \ SANITY_PROXY_REQUIRE | \ - SANITY_CHECK_DIGEST + SANITY_CHECK_DIGEST #define SANITY_URI_CHECK_RURI (1<<0) #define SANITY_URI_CHECK_FROM (1<<1) #define SANITY_URI_CHECK_TO (1<<2) #define SANITY_URI_CHECK_CONTACT (1<<3) +#define SANITY_URI_MAX_CHECKS (1<<4) /* Make sure this is the highest value */ #define SANITY_DEFAULT_URI_CHECKS SANITY_URI_CHECK_RURI | \ SANITY_URI_CHECK_FROM | \ diff --git a/modules/sanity/sanity.c b/modules/sanity/sanity.c index 9466313..2331289 100644 --- a/modules/sanity/sanity.c +++ b/modules/sanity/sanity.c @@ -40,6 +40,7 @@ #include "../../parser/digest/digest.h" #include "../../parser/contact/parse_contact.h" #include "../../parser/parse_to.h" +#include "../../parser/parse_from.h" #define UNSUPPORTED_HEADER "Unsupported: " #define UNSUPPORTED_HEADER_LEN (sizeof(UNSUPPORTED_HEADER)-1) @@ -994,3 +995,45 @@ int check_digest(struct sip_msg* msg, int checks) return SANITY_CHECK_PASSED; } + + +/* check for the presence of duplicate tag prameters in To/From headers */ +int check_duptags(sip_msg_t* _msg) +{ + to_body_t *tb; + to_param_t *tp; + int n; + + if(parse_from_header(_msg)<0 || parse_to_header(_msg)<0) { + DBG("check_duptags failed while parsing\n"); + return SANITY_CHECK_FAILED; + } + tb = get_from(_msg); + if(tb->tag_value.s!=NULL) { + n = 0; + for(tp = tb->param_lst; tp; tp = tp->next) { + if(tp->type==TAG_PARAM) + n++; + } + if(n>1) { + DBG("check_duptags failed for From header\n"); + return SANITY_CHECK_FAILED; + } + } + tb = get_to(_msg); + if(tb->tag_value.s!=NULL) { + n = 0; + for(tp = tb->param_lst; tp; tp = tp->next) { + if(tp->type==TAG_PARAM) + n++; + } + if(n>1) { + DBG("check_duptags failed for To header\n"); + return SANITY_CHECK_FAILED; + } + } + + return SANITY_CHECK_PASSED; +} + + diff --git a/modules/sanity/sanity.h b/modules/sanity/sanity.h index 7109b6e..e910ed1 100644 --- a/modules/sanity/sanity.h +++ b/modules/sanity/sanity.h @@ -81,4 +81,7 @@ int check_parse_uris(struct sip_msg* _msg, int checks); */ int check_digest(struct sip_msg* _msg, int checks); +/* check if there are duplicate tag params in From/To headers */ +int check_duptags(sip_msg_t* _msg); + #endif /* SANITY_CHK_H */