[sr-dev] git:master: modules_k/pv: Add new transformations to create prefixes

Module: sip-router Branch: master Commit: f68c308ebb8c9c0a182f92901076aee44230dae7 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=f68c308… Author: Alex Hermann &lt;alex(a)speakup.nl&gt; Committer: Alex Hermann &lt;alex(a)speakup.nl&gt; Date: Mon Dec 20 16:49:07 2010 +0100 modules_k/pv: Add new transformations to create prefixes s.prefixes creates a string with prefixes separated by comma's s.prefixes.quoted creates a string of quoted prefixes spearated by comma's Both take a parameter to specify the max prefix length. If zero, then return upto the whole string. Examples: "1234"{s.prefixes,0} => 1,12,123,1234 "123456"{s.prefixes,4} => 1,12,123,1234 "123456"{s.prefixes.quot,4} => '1','12','123','1234' --- modules_k/pv/pv_trans.c | 79 +++++++++++++++++++++++++++++++++++++++++++++- modules_k/pv/pv_trans.h | 2 +- 2 files changed, 78 insertions(+), 3 deletions(-) diff --git a/modules_k/pv/pv_trans.c b/modules_k/pv/pv_trans.c index e568ddb..35c7fe2 100644 --- a/modules_k/pv/pv_trans.c +++ b/modules_k/pv/pv_trans.c @@ -67,7 +67,7 @@ static char _tr_buffer[TR_BUFFER_SIZE]; int tr_eval_string(struct sip_msg *msg, tr_param_t *tp, int subtype, pv_value_t *val) { - int i, j; + int i, j, max; char *p, *s; str st; pv_value_t v; @@ -452,6 +452,50 @@ int tr_eval_string(struct sip_msg *msg, tr_param_t *tp, int subtype, val->rs.len -= i; break; + case TR_S_PREFIXES: + case TR_S_PREFIXES_QUOT: + if(!(val->flags&PV_VAL_STR)) + val->rs.s = int2str(val->ri, &val->rs.len); + + /* Set maximum prefix length */ + max = val->rs.len; + if(tp!=NULL) { + if(tp->type==TR_PARAM_NUMBER) { + if (tp->v.n > 0 && tp->v.n < max) + max = tp->v.n; + } else { + if(pv_get_spec_value(msg, (pv_spec_p)tp->v.data, &v)!=0 + || (!(v.flags&PV_VAL_INT))) + { + LM_ERR("prefixes cannot get max\n"); + return -1; + } + if (v.ri > 0 && v.ri < max) + max = v.ri; + } + } + + if(max * (max/2 + (subtype==TR_S_PREFIXES_QUOT ? 1 : 3)) > TR_BUFFER_SIZE-1) { + LM_ERR("prefixes buffer too short\n"); + return -1; + } + + j = 0; + for (i=1; i <= max; i++) { + if (subtype==TR_S_PREFIXES_QUOT) + _tr_buffer[j++] = '\''; + memcpy(&(_tr_buffer[j]), val->rs.s, i); + j += i; + if (subtype==TR_S_PREFIXES_QUOT) + _tr_buffer[j++] = '\''; + _tr_buffer[j++] = ','; + } + memset(val, 0, sizeof(pv_value_t)); + val->flags = PV_VAL_STR; + val->rs.s = _tr_buffer; + val->rs.len = j-1; + break; + default: LM_ERR("unknown subtype %d\n", subtype); @@ -1236,6 +1280,38 @@ char* tr_parse_string(str* in, trans_t *t) } else if(name.len==14 && strncasecmp(name.s, "unescape.param", 14)==0) { t->subtype = TR_S_UNESCAPEPARAM; goto done; + } else if(name.len==8 && strncasecmp(name.s, "prefixes", 8)==0) { + t->subtype = TR_S_PREFIXES; + if(*p!=TR_PARAM_MARKER) + goto done; + p++; + _tr_parse_nparam(p, p0, tp, spec, n, sign, in, s); + t->params = tp; + tp = 0; + while(*p && (*p==' ' || *p=='\t' || *p=='\n')) p++; + if(*p!=TR_RBRACKET) + { + LM_ERR("invalid prefixes transformation: %.*s!!\n", + in->len, in->s); + goto error; + } + goto done; + } else if(name.len==15 && strncasecmp(name.s, "prefixes.quoted", 15)==0) { + t->subtype = TR_S_PREFIXES_QUOT; + if(*p!=TR_PARAM_MARKER) + goto done; + p++; + _tr_parse_nparam(p, p0, tp, spec, n, sign, in, s); + t->params = tp; + tp = 0; + while(*p && (*p==' ' || *p=='\t' || *p=='\n')) p++; + if(*p!=TR_RBRACKET) + { + LM_ERR("invalid prefixes transformation: %.*s!!\n", + in->len, in->s); + goto error; + } + goto done; } else if(name.len==6 && strncasecmp(name.s, "substr", 6)==0) { t->subtype = TR_S_SUBSTR; if(*p!=TR_PARAM_MARKER) @@ -1706,4 +1782,3 @@ done: t->name = name; return p; } - diff --git a/modules_k/pv/pv_trans.h b/modules_k/pv/pv_trans.h index acd81db..1e601d8 100644 --- a/modules_k/pv/pv_trans.h +++ b/modules_k/pv/pv_trans.h @@ -39,7 +39,7 @@ enum _tr_s_subtype { TR_S_SELECT, TR_S_ENCODEHEXA, TR_S_DECODEHEXA, TR_S_ESCAPECOMMON, TR_S_UNESCAPECOMMON, TR_S_ESCAPEUSER, TR_S_UNESCAPEUSER, TR_S_ESCAPEPARAM, TR_S_UNESCAPEPARAM, TR_S_TOLOWER, TR_S_TOUPPER, - TR_S_STRIP, TR_S_STRIPTAIL + TR_S_STRIP, TR_S_STRIPTAIL, TR_S_PREFIXES, TR_S_PREFIXES_QUOT }; enum _tr_uri_subtype { TR_URI_NONE=0, TR_URI_USER, TR_URI_HOST, TR_URI_PASSWD, TR_URI_PORT,