Module: kamailio Branch: master Commit: e1954d7624eecdc33137d224c248240e2df90703 URL: https://github.com/kamailio/kamailio/commit/e1954d7624eecdc33137d224c248240… Author: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Committer: Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt; Date: 2024-08-02T11:36:25+02:00 textops: new function subst_v(...) - perform sed-like substituion over input text and store in a variable --- Modified: src/modules/textops/textops.c --- Diff: https://github.com/kamailio/kamailio/commit/e1954d7624eecdc33137d224c248240… Patch: https://github.com/kamailio/kamailio/commit/e1954d7624eecdc33137d224c248240… --- diff --git a/src/modules/textops/textops.c b/src/modules/textops/textops.c index 6baf40de6ad..d28d7f508cf 100644 --- a/src/modules/textops/textops.c +++ b/src/modules/textops/textops.c @@ -100,6 +100,7 @@ static int subst_uri_f(struct sip_msg *, char *, char *); static int subst_user_f(struct sip_msg *, char *, char *); static int subst_body_f(struct sip_msg *, char *, char *); static int subst_hf_f(struct sip_msg *, char *, char *, char *); +static int subst_v_f(struct sip_msg *, char *, char *, char *); static int filter_body_f(struct sip_msg *, char *, char *); static int is_present_hf_f(struct sip_msg *msg, char *str_hf, char *foo); static int search_append_body_f(struct sip_msg *, char *, char *); @@ -252,6 +253,8 @@ static cmd_export_t cmds[] = { {"subst_body", (cmd_function)subst_body_f, 1, fixup_substre, 0, ANY_ROUTE}, {"subst_hf", (cmd_function)subst_hf_f, 3, fixup_subst_hf, 0, ANY_ROUTE}, + {"subst_v", (cmd_function)subst_v_f, 3, fixup_spve2_pvar, + fixup_free_spve2_pvar, ANY_ROUTE}, {"filter_body", (cmd_function)filter_body_f, 1, fixup_str_null, 0, ANY_ROUTE}, {"append_time", (cmd_function)append_time_f, 0, 0, 0, @@ -1527,6 +1530,76 @@ static int subst_body_f(struct sip_msg *msg, char *subst, char *ignored) return subst_body_helper_f(msg, (struct subst_expr *)subst); } +/* sed-perl style re: s/regular expression/replacement/flags, like + * subst but with variables */ +static int subst_v_helper_f( + sip_msg_t *msg, str *itext, str *subex, pv_spec_t *pvd) +{ + str *result; + int nmatches; + struct subst_expr *se; + pv_value_t val; + + if(pvd->setf == NULL) { + LM_ERR("the variable is read only\n"); + return -1; + } + se = subst_parser(subex); + if(se == 0) { + LM_ERR("bad subst re: %.*s\n", subex->len, subex->s); + return -1; + } + /* pkg malloc'ed result */ + result = subst_str(itext->s, msg, se, &nmatches); + if(result == NULL) { + if(nmatches < 0) { + LM_ERR("substitution failed\n"); + } + return -1; + } + memset(&val, 0, sizeof(pv_value_t)); + val.rs.s = result->s; + val.rs.len = result->len; + val.flags = PV_VAL_STR; + pvd->setf(msg, &pvd->pvp, (int)EQ_T, &val); + + pkg_free(result->s); + pkg_free(result); + return 1; +} + +/* sed-perl style re: s/regular expression/replacement/flags, like + * subst but with variables */ +static int ki_subst_v(sip_msg_t *msg, str *itext, str *subex, str *opv) +{ + pv_spec_t *pvd = NULL; + + pvd = pv_cache_get(opv); + if(pvd == NULL) { + LM_ERR("failed to get pv spec\n"); + return -1; + } + return subst_v_helper_f(msg, itext, subex, pvd); +} + +static int subst_v_f(sip_msg_t *msg, char *pitext, char *psubex, char *popv) +{ + str itext = STR_NULL; + str subex = STR_NULL; + + if(fixup_get_svalue(msg, (gparam_t *)pitext, &itext) < 0) { + LM_ERR("failed to get header name\n"); + return -1; + } + if(fixup_get_svalue(msg, (gparam_t *)psubex, &subex) < 0) { + LM_ERR("failed to get header name\n"); + return -1; + } + + return subst_v_helper_f(msg, &itext, &subex, (pv_spec_t *)popv); +} + + static inline int find_line_start( char *text, unsigned int text_len, char **buf, unsigned int *buf_len) { @@ -5282,6 +5355,11 @@ static sr_kemi_t sr_kemi_textops_exports[] = { { SR_KEMIP_STR, SR_KEMIP_STR, SR_KEMIP_STR, SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE } }, + { str_init("textops"), str_init("subst_v"), + SR_KEMIP_INT, ki_subst_v, + { SR_KEMIP_STR, SR_KEMIP_STR, SR_KEMIP_STR, + SR_KEMIP_NONE, SR_KEMIP_NONE, SR_KEMIP_NONE } + }, { str_init("textops"), str_init("remove_hf"), SR_KEMIP_INT, ki_remove_hf, { SR_KEMIP_STR, SR_KEMIP_NONE, SR_KEMIP_NONE,