[sr-dev] git:master:6992c9ee: core: helper functions to escape/unescape cr lf

Module: kamailio Branch: master Commit: 6992c9eedeabd931fc255e5c1e992b0cfb01dbca URL: https://github.com/kamailio/kamailio/commit/6992c9eedeabd931fc255e5c1e992b0… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2024-04-03T18:48:29+02:00 core: helper functions to escape/unescape cr lf --- Modified: src/core/strutils.c Modified: src/core/strutils.h --- Diff: https://github.com/kamailio/kamailio/commit/6992c9eedeabd931fc255e5c1e992b0… Patch: https://github.com/kamailio/kamailio/commit/6992c9eedeabd931fc255e5c1e992b0… --- diff --git a/src/core/strutils.c b/src/core/strutils.c index 73e713cb451..475150dc0f7 100644 --- a/src/core/strutils.c +++ b/src/core/strutils.c @@ -109,6 +109,68 @@ int unescape_common(char *dst, char *src, int src_len) return j; } +/*! \brief + * add backslashes for CR LF + */ +int escape_crlf(str *sin, str *sout) +{ + int i, j; + + if(sout == 0 || sin == 0 || sin->len <= 0) + return -1; + j = 0; + for(i = 0; i < sin->len; i++) { + switch(sin->s[i]) { + case '\n': + sout->s[j++] = '\\'; + sout->s[j++] = 'n'; + break; + case '\r': + sout->s[j++] = '\\'; + sout->s[j++] = 'r'; + break; + default: + sout->s[j++] = sin->s[i]; + } + } + sout->len = j; + return 0; +} + +/*! \brief + * remove backslashes for CR LF + */ +int unescape_crlf(str *sin, str *sout) +{ + int i, j; + + if(sout == 0 || sin == 0 || sin->len <= 0) + return -1; + j = 0; + i = 0; + while(i < sin->len) { + if(sin->s[i] == '\\' && i + 1 < sin->len) { + switch(sin->s[i + 1]) { + case 'n': + sout->s[j++] = '\n'; + i++; + break; + case 'r': + sout->s[j++] = '\r'; + i++; + break; + default: + sout->s[j++] = sin->s[i]; + } + } else { + sout->s[j++] = sin->s[i]; + } + i++; + } + sout->len = j; + return 0; +} + /*! \brief Unscape all printable ASCII characters */ int unescape_user(str *sin, str *sout) { diff --git a/src/core/strutils.h b/src/core/strutils.h index b32e610512c..5781943dacb 100644 --- a/src/core/strutils.h +++ b/src/core/strutils.h @@ -56,6 +56,8 @@ int escape_common(char *dst, char *src, int src_len); /* remove backslashes to special characters */ int unescape_common(char *dst, char *src, int src_len); +int escape_crlf(str *sin, str *sout); +int unescape_crlf(str *sin, str *sout); int escape_user(str *sin, str *sout); int unescape_user(str *sin, str *sout); int escape_param(str *sin, str *sout);