/
textopsx.c
2327 lines (2124 loc) · 57 KB
/
textopsx.c
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/**
*
* Copyright (C) 2001-2003 FhG Fokus
*
* This file is part of Kamailio, a free SIP server.
*
* ser is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version
*
* For a license to use the ser software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* ser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fnmatch.h>
#include "../../core/sr_module.h"
#include "../../core/dprint.h"
#include "../../core/data_lump.h"
#include "../../core/msg_translator.h"
#include "../../core/tcp_options.h"
#include "../../core/mod_fix.h"
#include "../../core/parser/parse_hname2.h"
#include "../../core/select.h"
#include "../../core/select_buf.h"
#include "../../core/kemi.h"
#include "api.h"
MODULE_VERSION
static int msg_apply_changes_f(sip_msg_t *msg, char *str1, char *str2);
static int change_reply_status_f(sip_msg_t *, char *, char *);
static int change_reply_status_fixup(void **param, int param_no);
static int change_reply_status_code_f(sip_msg_t *, char *, char *);
static int w_keep_hf_f(sip_msg_t *, char *, char *);
static int w_fnmatch2_f(sip_msg_t *, char *, char *);
static int w_fnmatch3_f(sip_msg_t *, char *, char *, char *);
static int fixup_fnmatch(void **param, int param_no);
static int w_remove_body_f(struct sip_msg *, char *, char *);
static int incexc_hf_value_f(struct sip_msg *msg, char *, char *);
static int include_hf_value_fixup(void **, int);
static int exclude_hf_value_fixup(void **, int);
static int hf_value_exists_fixup(void **, int);
static int insupddel_hf_value_f(struct sip_msg *msg, char *_hname, char *_val);
static int append_hf_value_fixup(void **param, int param_no);
static int insert_hf_value_fixup(void **param, int param_no);
static int remove_hf_value_fixup(void **param, int param_no);
static int assign_hf_value_fixup(void **param, int param_no);
static int remove_hf_value2_fixup(void **param, int param_no);
static int assign_hf_value2_fixup(void **param, int param_no);
static int bind_textopsx(textopsx_api_t *tob);
static int mod_init(void);
extern select_row_t sel_declaration[];
/* cfg functions */
/* clag-format off */
static cmd_export_t cmds[] = {
{"msg_apply_changes", (cmd_function)msg_apply_changes_f, 0, 0, 0,
REQUEST_ROUTE | ONREPLY_ROUTE},
{"change_reply_status", change_reply_status_f, 2,
change_reply_status_fixup, 0, ONREPLY_ROUTE},
{"change_reply_status_code", change_reply_status_code_f, 1,
fixup_igp_null, 0, ONREPLY_ROUTE},
{"remove_body", (cmd_function)w_remove_body_f, 0, 0, 0, ANY_ROUTE},
{"keep_hf", (cmd_function)w_keep_hf_f, 0, fixup_regexp_null, 0, ANY_ROUTE},
{"keep_hf", (cmd_function)w_keep_hf_f, 1, fixup_regexp_null, 0, ANY_ROUTE},
{"fnmatch", (cmd_function)w_fnmatch2_f, 2, fixup_fnmatch, 0, ANY_ROUTE},
{"fnmatch", (cmd_function)w_fnmatch3_f, 3, fixup_fnmatch, 0, ANY_ROUTE},
{"append_hf_value", insupddel_hf_value_f, 2, append_hf_value_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"insert_hf_value", insupddel_hf_value_f, 2, insert_hf_value_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"remove_hf_value", insupddel_hf_value_f, 1, remove_hf_value_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"assign_hf_value", insupddel_hf_value_f, 2, assign_hf_value_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"remove_hf_value2", insupddel_hf_value_f, 1, remove_hf_value2_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"assign_hf_value2", insupddel_hf_value_f, 2, assign_hf_value2_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"include_hf_value", incexc_hf_value_f, 2, include_hf_value_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"exclude_hf_value", incexc_hf_value_f, 2, exclude_hf_value_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"hf_value_exists", incexc_hf_value_f, 2, hf_value_exists_fixup, 0,
REQUEST_ROUTE | ONREPLY_ROUTE | FAILURE_ROUTE | BRANCH_ROUTE},
{"bind_textopsx", (cmd_function)bind_textopsx, 1, 0, 0, ANY_ROUTE},
{0, 0, 0, 0, 0, 0}
};
/* module exports structure */
struct module_exports exports = {
"textopsx", /* module name */
DEFAULT_DLFLAGS, /* dlopen flags */
cmds, /* exported cfg functions */
0, /* exported cfg parameters */
0, /* exported RPC methods */
0, /* exported pseudo-variables */
0, /* response handling function */
mod_init, /* module init function */
0, /* per-child init function */
0, /* destroy function */
};
/* clag-format on */
/**
* init module function
*/
static int mod_init(void)
{
#ifdef USE_TCP
tcp_set_clone_rcvbuf(1);
#endif
register_select_table(sel_declaration);
return 0;
}
/**
*
*/
static int ki_msg_update_buffer(sip_msg_t *msg, str *obuf)
{
if(obuf==NULL || obuf->s==NULL || obuf->len<=0) {
LM_ERR("invalid buffer parameter\n");
return -1;
}
if(obuf->len >= BUF_SIZE) {
LM_ERR("new buffer is too large (%d)\n", obuf->len);
return -1;
}
return sip_msg_update_buffer(msg, obuf);
}
/**
*
*/
static int ki_msg_set_buffer(sip_msg_t *msg, str *obuf)
{
if(msg->first_line.type != SIP_REPLY && get_route_type() != REQUEST_ROUTE) {
LM_ERR("invalid usage - not in request route or a reply\n");
return -1;
}
return ki_msg_update_buffer(msg, obuf);
}
/**
*
*/
static int ki_msg_apply_changes(sip_msg_t *msg)
{
return sip_msg_apply_changes(msg);
}
/**
*
*/
static int msg_apply_changes_f(sip_msg_t *msg, char *str1, char *str2)
{
return sip_msg_apply_changes(msg);
}
/**
*
*/
static int change_reply_status_fixup(void **param, int param_no)
{
if(param_no == 1) {
return fixup_var_int_12(param, param_no);
} else if(param_no == 2)
return fixup_var_pve_str_12(param, param_no);
else
return 0;
}
/**
*
*/
static int ki_change_reply_status(sip_msg_t *msg, int code, str *reason)
{
struct lump *l;
char *ch;
if(reason==NULL || (reason->len<=0)) {
LM_ERR("invalid reason parameter\n");
return -1;
}
if((code < 100) || (code > 699)) {
LM_ERR("wrong status code: %d\n", code);
return -1;
}
if(((code < 300) || (msg->REPLY_STATUS < 300))
&& (code / 100 != msg->REPLY_STATUS / 100)) {
LM_ERR("the class of provisional or "
"positive final replies cannot be changed\n");
return -1;
}
/* rewrite the status code directly in the message buffer */
msg->first_line.u.reply.statuscode = code;
msg->first_line.u.reply.status.s[2] = code % 10 + '0';
code /= 10;
msg->first_line.u.reply.status.s[1] = code % 10 + '0';
code /= 10;
msg->first_line.u.reply.status.s[0] = code + '0';
l = del_lump(msg, msg->first_line.u.reply.reason.s - msg->buf,
msg->first_line.u.reply.reason.len, 0);
if(!l) {
LM_ERR("Failed to add del lump\n");
return -1;
}
/* clone the reason phrase, the lumps need to be pkg allocated */
ch = (char *)pkg_malloc(reason->len);
if(!ch) {
LM_ERR("Not enough memory\n");
return -1;
}
memcpy(ch, reason->s, reason->len);
if(insert_new_lump_after(l, ch, reason->len, 0) == 0) {
LM_ERR("failed to add new lump: %.*s\n", reason->len, ch);
pkg_free(ch);
return -1;
}
return 1;
}
/**
*
*/
static int change_reply_status_f(
struct sip_msg *msg, char *_code, char *_reason)
{
int code;
str reason;
if(get_int_fparam(&code, msg, (fparam_t *)_code)
|| get_str_fparam(&reason, msg, (fparam_t *)_reason)) {
LM_ERR("cannot get parameters\n");
return -1;
}
return ki_change_reply_status(msg, code, &reason);
}
/**
*
*/
static int ki_change_reply_status_code(sip_msg_t *msg, int code)
{
if((code < 100) || (code > 699)) {
LM_ERR("wrong status code: %d\n", code);
return -1;
}
if(((code < 300) || (msg->REPLY_STATUS < 300))
&& (code / 100 != msg->REPLY_STATUS / 100)) {
LM_ERR("the class of provisional or "
"positive final replies cannot be changed\n");
return -1;
}
/* rewrite the status code directly in the message buffer */
msg->first_line.u.reply.statuscode = code;
msg->first_line.u.reply.status.s[2] = code % 10 + '0';
code /= 10;
msg->first_line.u.reply.status.s[1] = code % 10 + '0';
code /= 10;
msg->first_line.u.reply.status.s[0] = code + '0';
return 1l;
}
/**
*
*/
static int change_reply_status_code_f(sip_msg_t *msg, char *pcode, char *p2)
{
int code;
if(fixup_get_ivalue(msg, (gparam_t*)pcode, &code)<0) {
LM_ERR("cannot get parameters\n");
return -1;
}
return ki_change_reply_status_code(msg, code);
}
/**
*
*/
static int ki_remove_body(struct sip_msg *msg)
{
str body = {0, 0};
body.len = 0;
body.s = get_body(msg);
if(body.s == 0) {
LM_DBG("no body in the message\n");
return 1;
}
body.len = msg->buf + msg->len - body.s;
if(body.len <= 0) {
LM_DBG("empty body in the message\n");
return 1;
}
if(del_lump(msg, body.s - msg->buf, body.len, 0) == 0) {
LM_ERR("cannot remove body\n");
return -1;
}
return 1;
}
/**
*
*/
static int w_remove_body_f(struct sip_msg *msg, char *p1, char *p2)
{
return ki_remove_body(msg);
}
/**
*
*/
static int keep_hf_helper(sip_msg_t *msg, regex_t *re)
{
struct hdr_field *hf;
regmatch_t pmatch;
char c;
struct lump *l;
/* we need to be sure we have seen all HFs */
if(parse_headers(msg, HDR_EOH_F, 0) == -1) {
LM_ERR("Error while parsing message\n");
return -1;
}
for(hf = msg->headers; hf; hf = hf->next) {
switch(hf->type) {
case HDR_FROM_T:
case HDR_TO_T:
case HDR_CALLID_T:
case HDR_CSEQ_T:
case HDR_VIA_T:
case HDR_VIA2_T:
case HDR_CONTACT_T:
case HDR_CONTENTLENGTH_T:
case HDR_CONTENTTYPE_T:
case HDR_ROUTE_T:
case HDR_RECORDROUTE_T:
case HDR_MAXFORWARDS_T:
continue;
default:;
}
if(re == NULL) {
/* no regex to match => remove all */
l = del_lump(msg, hf->name.s - msg->buf, hf->len, 0);
if(l == 0) {
LM_ERR("cannot remove header [%.*s]\n", hf->name.len,
hf->name.s);
return -1;
}
} else {
STR_VTOZ(hf->name.s[hf->name.len], c);
if(regexec(re, hf->name.s, 1, &pmatch, 0) != 0) {
/* no match => remove */
STR_ZTOV(hf->name.s[hf->name.len], c);
l = del_lump(msg, hf->name.s - msg->buf, hf->len, 0);
if(l == 0) {
LM_ERR("cannot remove header [%.*s]\n", hf->name.len,
hf->name.s);
return -1;
}
} else {
STR_ZTOV(hf->name.s[hf->name.len], c);
}
}
}
return -1;
}
/**
*
*/
static int w_keep_hf_f(struct sip_msg *msg, char *key, char *foo)
{
regex_t *re;
if(key) {
re = (regex_t *)key;
} else {
re = NULL;
}
return keep_hf_helper(msg, re);
}
/**
*
*/
static int ki_keep_hf(sip_msg_t *msg)
{
return keep_hf_helper(msg, NULL);
}
/**
*
*/
static int ki_keep_hf_re(sip_msg_t *msg, str *sre)
{
regex_t re;
int ret;
if(sre==NULL || sre->len<=0)
return keep_hf_helper(msg, NULL);
memset(&re, 0, sizeof(regex_t));
if (regcomp(&re, sre->s, REG_EXTENDED|REG_ICASE|REG_NEWLINE)!=0) {
LM_ERR("failed to compile regex: %.*s\n", sre->len, sre->s);
return -1;
}
ret = keep_hf_helper(msg, &re);
regfree(&re);
return ret;
}
/**
*
*/
static int w_fnmatch_ex(str *val, str *match, str *flags)
{
int i;
i = 0;
#ifdef FNM_CASEFOLD
if(flags && (flags->s[0] == 'i' || flags->s[0] == 'I'))
i = FNM_CASEFOLD;
#endif
if(fnmatch(match->s, val->s, i) == 0)
return 0;
return -1;
}
/**
*
*/
static int w_fnmatch2_f(sip_msg_t *msg, char *val, char *match)
{
str sval;
str smatch;
if(get_str_fparam(&sval, msg, (fparam_t *)val) < 0
|| get_str_fparam(&smatch, msg, (fparam_t *)match) < 0) {
LM_ERR("invalid parameters");
return -1;
}
if(w_fnmatch_ex(&sval, &smatch, NULL) < 0)
return -1;
return 1;
}
/**
*
*/
static int w_fnmatch3_f(sip_msg_t *msg, char *val, char *match, char *flags)
{
str sval;
str smatch;
str sflags;
if(get_str_fparam(&sval, msg, (fparam_t *)val) < 0
|| get_str_fparam(&smatch, msg, (fparam_t *)match) < 0
|| get_str_fparam(&sflags, msg, (fparam_t *)flags) < 0) {
LM_ERR("invalid parameters");
return -1;
}
if(w_fnmatch_ex(&sval, &smatch, &sflags) < 0)
return -1;
return 1;
}
/**
*
*/
static int ki_fnmatch(sip_msg_t *msg, str *val, str *match)
{
return w_fnmatch_ex(val, match, NULL);
}
/**
*
*/
static int ki_fnmatch_ex(sip_msg_t *msg, str *val, str *match, str *flags)
{
return w_fnmatch_ex(val, match, flags);
}
/**
*
*/
static int fixup_fnmatch(void **param, int param_no)
{
if(param_no == 1) {
return fixup_var_pve_12(param, param_no);
} else if(param_no == 2) {
return fixup_var_pve_12(param, param_no);
} else if(param_no == 3) {
return fixup_var_pve_12(param, param_no);
} else {
return 0;
}
}
/*
* Function to load the textops api.
*/
static int bind_textopsx(textopsx_api_t *tob)
{
if(tob == NULL) {
LM_WARN("textopsx_binds: Cannot load textopsx API into a NULL "
"pointer\n");
return -1;
}
tob->msg_apply_changes = msg_apply_changes_f;
return 0;
}
/**
* functions operating on header value
*/
#define HNF_ALL 0x01
#define HNF_IDX 0x02
#define MAX_HF_VALUE_STACK 10
enum
{
hnoInsert,
hnoAppend,
hnoAssign,
hnoRemove,
hnoInclude,
hnoExclude,
hnoIsIncluded,
hnoGetValue,
hnoGetValueUri,
hnoGetValueName,
hnoRemove2,
hnoAssign2,
hnoGetValue2
};
struct hname_data
{
int oper;
int htype;
str hname;
int flags;
int idx;
str param;
};
#define is_space(_p) \
((_p) == '\t' || (_p) == '\n' || (_p) == '\r' || (_p) == ' ')
#define eat_spaces(_p) \
while(is_space(*(_p))) { \
(_p)++; \
}
#define is_alphanum(_p) \
(((_p) >= 'a' && (_p) <= 'z') || ((_p) >= 'A' && (_p) <= 'Z') \
|| ((_p) >= '0' && (_p) <= '9') || (_p) == '_' || (_p) == '-')
#define eat_while_alphanum(_p) \
while(is_alphanum(*(_p))) { \
(_p)++; \
}
static int fixup_hvalue_param(void **param, int param_no)
{
return fixup_spve_null(param, 1);
}
static int eval_hvalue_param(sip_msg_t *msg, gparam_t *val, str *s)
{
if(fixup_get_svalue(msg, val, s) < 0) {
LM_ERR("could not get string param value\n");
return E_UNSPEC;
}
return 1;
}
/* parse: hname [ ([] | [*] | [number]) ] [ "." param ] */
static int fixup_hname_param(char *hname, struct hname_data **h)
{
struct hdr_field hdr;
char *savep, savec;
*h = pkg_malloc(sizeof(**h));
if(!*h)
return E_OUT_OF_MEM;
memset(*h, 0, sizeof(**h));
memset(&hdr, 0, sizeof(hdr));
eat_spaces(hname);
(*h)->hname.s = hname;
savep = hname;
eat_while_alphanum(hname);
(*h)->hname.len = hname - (*h)->hname.s;
savec = *hname;
*hname = ':';
parse_hname2_short(
(*h)->hname.s, (*h)->hname.s + (*h)->hname.len + 1, &hdr);
*hname = savec;
if(hdr.type == HDR_ERROR_T)
goto err;
(*h)->htype = hdr.type;
eat_spaces(hname);
savep = hname;
if(*hname == '[') {
hname++;
eat_spaces(hname);
savep = hname;
(*h)->flags |= HNF_IDX;
if(*hname == '*') {
(*h)->flags |= HNF_ALL;
hname++;
} else if(*hname != ']') {
char *c;
(*h)->idx = strtol(hname, &c, 10);
if(hname == c)
goto err;
hname = c;
}
eat_spaces(hname);
savep = hname;
if(*hname != ']')
goto err;
hname++;
}
eat_spaces(hname);
savep = hname;
if(*hname == '.') {
hname++;
eat_spaces(hname);
savep = hname;
(*h)->param.s = hname;
eat_while_alphanum(hname);
(*h)->param.len = hname - (*h)->param.s;
if((*h)->param.len == 0)
goto err;
} else {
(*h)->param.s = hname;
}
savep = hname;
if(*hname != '\0')
goto err;
(*h)->hname.s[(*h)->hname.len] = '\0';
(*h)->param.s[(*h)->param.len] = '\0';
return 0;
err:
pkg_free(*h);
LM_ERR("cannot parse header near '%s'\n", savep);
return E_CFG;
}
static int fixup_hname_str(void **param, int param_no)
{
if(param_no == 1) {
struct hname_data *h;
int res = fixup_hname_param(*param, &h);
if(res < 0)
return res;
*param = h;
} else if(param_no == 2) {
return fixup_hvalue_param(param, param_no);
}
return 0;
}
static int fixup_free_hname_str(void **param, int param_no)
{
if(param_no == 1) {
struct hname_data *h;
h = (struct hname_data *)(*param);
pkg_free(h);
return 0;
} else if(param_no == 2) {
return fixup_free_spve_null(param, 1);
}
return 0;
}
static int find_next_hf(
struct sip_msg *msg, struct hname_data *hname, struct hdr_field **hf)
{
if(!*hf) {
if(parse_headers(msg, HDR_EOH_F, 0) == -1) {
LM_ERR("Error while parsing message\n");
return -1;
}
*hf = msg->headers;
} else {
*hf = (*hf)->next;
}
for(; *hf; *hf = (*hf)->next) {
if(hname->htype == HDR_OTHER_T) {
if((*hf)->name.len == hname->hname.len
&& strncasecmp(
(*hf)->name.s, hname->hname.s, (*hf)->name.len)
== 0)
return 1;
} else if(hname->htype == (*hf)->type) {
return 1;
}
}
return 0;
}
static int find_next_value(char **start, char *end, str *val, str *lump_val)
{
int quoted = 0;
lump_val->s = *start;
while(*start < end && is_space(**start))
(*start)++;
val->s = *start;
while(*start < end && (**start != ',' || quoted)) {
if(**start == '\"' && (!quoted || (*start)[-1] != '\\'))
quoted = ~quoted;
(*start)++;
}
val->len = *start - val->s;
while(val->len > 0 && is_space(val->s[val->len - 1]))
val->len--;
/* we cannot automatically strip quotes!!! an example why: "name" <sip:ssss>;param="bar"
if (val->len >= 2 && val->s[0] == '\"' && val->s[val->len-1] == '\"') {
val->s++;
val->len -= 2;
}
*/
while(*start < end && **start != ',')
(*start)++;
if(*start < end) {
(*start)++;
}
lump_val->len = *start - lump_val->s;
return (*start < end);
}
static void adjust_lump_val_for_delete(struct hdr_field *hf, str *lump_val)
{
if(lump_val->s + lump_val->len == hf->body.s + hf->body.len) {
if(lump_val->s > hf->body.s) {
/* in case if is it last value in header save position of last delimiter to remove it with rightmost value */
lump_val->s--;
lump_val->len++;
}
}
}
static int find_hf_value_idx(struct sip_msg *msg, struct hname_data *hname,
struct hdr_field **hf, str *val, str *lump_val)
{
int res;
char *p;
if(hname->flags & HNF_ALL || hname->idx == 0)
return -1;
*hf = 0;
if(hname->idx > 0) {
int idx;
idx = hname->idx;
do {
res = find_next_hf(msg, hname, hf);
if(res < 0)
return -1;
if(*hf) {
if(val) {
lump_val->len = 0;
p = (*hf)->body.s;
do {
res = find_next_value(&p,
(*hf)->body.s + (*hf)->body.len, val, lump_val);
idx--;
} while(res && idx);
} else {
idx--;
}
}
} while(*hf && idx);
} else if(hname->idx < 0) { /* search from the bottom */
struct hf_value_stack
{
str val, lump_val;
struct hdr_field *hf;
} stack[MAX_HF_VALUE_STACK];
int stack_pos, stack_num;
if(-hname->idx > MAX_HF_VALUE_STACK)
return -1;
stack_pos = stack_num = 0;
do {
res = find_next_hf(msg, hname, hf);
if(res < 0)
return -1;
if(*hf) {
stack[stack_pos].lump_val.len = 0;
p = (*hf)->body.s;
do {
stack[stack_pos].hf = *hf;
if(val)
res = find_next_value(&p,
(*hf)->body.s + (*hf)->body.len,
&stack[stack_pos].val,
&stack[stack_pos].lump_val);
else
res = 0;
stack_pos++;
if(stack_pos >= MAX_HF_VALUE_STACK)
stack_pos = 0;
if(stack_num < MAX_HF_VALUE_STACK)
stack_num++;
} while(res);
}
} while(*hf);
if(-hname->idx <= stack_num) {
stack_pos += hname->idx;
if(stack_pos < 0)
stack_pos += MAX_HF_VALUE_STACK;
*hf = stack[stack_pos].hf;
if(val) {
*val = stack[stack_pos].val;
*lump_val = stack[stack_pos].lump_val;
}
} else {
*hf = 0;
}
} else
return -1;
return *hf ? 1 : 0;
}
static int find_hf_value_param(struct hname_data *hname, str *param_area,
str *value, str *lump_upd, str *lump_del)
{
int i, j, found;
i = 0;
while(1) {
lump_del->s = param_area->s + i;
for(; i < param_area->len && is_space(param_area->s[i]); i++)
;
if(i < param_area->len
&& param_area->s[i] == ';') { /* found a param ? */
i++;
for(; i < param_area->len && is_space(param_area->s[i]); i++)
;
j = i;
for(; i < param_area->len && !is_space(param_area->s[i])
&& param_area->s[i] != '=' && param_area->s[i] != ';';
i++)
;
found = hname->param.len == i - j
&& !strncasecmp(hname->param.s, param_area->s + j, i - j);
lump_upd->s = param_area->s + i;
value->s = param_area->s + i;
value->len = 0;
for(; i < param_area->len && is_space(param_area->s[i]); i++)
;
if(i < param_area->len && param_area->s[i] == '=') {
i++;
for(; i < param_area->len && is_space(param_area->s[i]); i++)
;
value->s = param_area->s + i;
if(i < param_area->len) {
if(param_area->s[i] == '\"') {
i++;
value->s++;
for(; i < param_area->len; i++) {
if(param_area->s[i] == '\"') {
i++;
break;
}
value->len++;
}
} else {
for(; i < param_area->len && !is_space(param_area->s[i])
&& param_area->s[i] != ';';
i++, value->len++)
;
}
}
}
if(found) {
lump_del->len = param_area->s + i - lump_del->s;
lump_upd->len = param_area->s + i - lump_upd->s;
return 1;
}
} else { /* not found, return last correct position, should be end of param area */
lump_del->len = 0;
return 0;
}
}
}
/* parse: something param_name=param_value something [ "," something param_name="param_value" ....]
* 'something' is required by Authenticate
*/
static int find_hf_value2_param(struct hname_data *hname, str *param_area,
str *value, str *lump_upd, str *lump_del, char *delim)
{
int i, j, k, found, comma_flag;
i = 0;
*delim = 0;
lump_del->len = 0;
while(i < param_area->len) {
lump_del->s = param_area->s + i;
while(i < param_area->len && is_space(param_area->s[i]))
i++;
comma_flag = i < param_area->len && param_area->s[i] == ',';
if(comma_flag)
i++;
while(i < param_area->len && is_space(param_area->s[i]))
i++;
if(i < param_area->len
&& is_alphanum(param_area->s[i])) { /* found a param name ? */
j = i;
if(!*delim)
*delim = ' ';
while(i < param_area->len && is_alphanum(param_area->s[i]))
i++;
k = i;
while(i < param_area->len && is_space(param_area->s[i]))
i++;
lump_upd->s = param_area->s + i;
if(i < param_area->len
&& param_area->s[i]
== '=') { /* if equal then it's the param */
*delim = ',';
i++;
found = hname->param.len == k - j
&& !strncasecmp(
hname->param.s, param_area->s + j, k - j);
while(i < param_area->len && is_space(param_area->s[i]))
i++;
value->s = param_area->s + i;
value->len = 0;
if(i < param_area->len) {
if(param_area->s[i] == '\"') {
i++;