[sr-dev] git:kamailio_3.0: core: new param to give outbut buffer size

Module: sip-router Branch: kamailio_3.0 Commit: a765213ffa3769577dd7438c95737cb6b98bff74 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=a765213… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: Tue Feb 2 15:06:34 2010 +0100 core: new param to give outbut buffer size - int2strbuf requires now outbut buffer size as parameter - safer against misuses, suggested by Andrei Pelinescu-Onciul - if size is less than INT2STR_MAX_LEN, return null pointer --- ut.h | 11 ++++++++--- 1 files changed, 8 insertions(+), 3 deletions(-) diff --git a/ut.h b/ut.h index 3e4d7a6..3d98e11 100644 --- a/ut.h +++ b/ut.h @@ -294,10 +294,15 @@ static inline char* int2str_base(unsigned int l, int* len, int base) /* print int to asciiz in a string buffer * - be sure result buffer is at least INT2STR_MAX_LEN in size */ -static inline char* int2strbuf(unsigned int l, char *r, int* len) +static inline char* int2strbuf(unsigned int l, char *r, int r_size, int* len) { int i; - + + if(unlikely(r_size<INT2STR_MAX_LEN)) { + if (len) + *len = 0; + return 0; /* => if someone misuses it => crash (feature no. 1) */ + } i=INT2STR_MAX_LEN-2; r[INT2STR_MAX_LEN-1]=0; /* null terminate */ do{ @@ -316,7 +321,7 @@ extern char ut_buf_int2str[INT2STR_MAX_LEN]; /* returns a pointer to a static buffer containing l in asciiz & sets len */ static inline char* int2str(unsigned long l, int* len) { - return int2strbuf(l, ut_buf_int2str, len); + return int2strbuf(l, ut_buf_int2str, INT2STR_MAX_LEN, len); } /* Signed INTeger-TO-STRing: convers a long to a string