[sr-dev] git:master: xl-lib: shm memory support, regex back reference parsing, xbind

Module: sip-router Branch: master Commit: e6c25ed7be53c692a4cc805a63175a477a6063e8 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=e6c25ed… Author: Miklos Tirpak &lt;miklos(a)iptel.org&gt; Committer: Miklos Tirpak &lt;miklos(a)iptel.org&gt; Date: Wed Nov 11 10:10:52 2009 +0100 xl-lib: shm memory support, regex back reference parsing, xbind - xl-lib parser supports both pkg and shm memory - new wrapper functions for the shm memory version: - xl_shm_parse_format() - xl_elog_shm_free_all() - The parser can identify the regular expression back references (\1, \2, ...) and call a callback function to farther parse the back reference. Wraper functions for this: - xl_parse_format2() - xl_shm_parse_format2() - xbind() module function has been introduced that can be used to bind to the xl API as opposed to search each exported function individually. --- modules_s/xlog/xl_lib.c | 146 ++++++++++++++++++++++++++++++++++++++++++----- modules_s/xlog/xl_lib.h | 30 ++++++++++ modules_s/xlog/xlog.c | 13 +++- 3 files changed, 171 insertions(+), 18 deletions(-) diff --git a/modules_s/xlog/xl_lib.c b/modules_s/xlog/xl_lib.c index 1242184..a583f62 100644 --- a/modules_s/xlog/xl_lib.c +++ b/modules_s/xlog/xl_lib.c @@ -44,6 +44,7 @@ #include "../../dprint.h" #include "../../mem/mem.h" +#include "../../mem/shm_mem.h" #include "../../ut.h" #include "../../trim.h" #include "../../dset.h" @@ -935,6 +936,13 @@ static void xl_free_select(str *hp) free_select((select_t*)hp->s); } +/* shared memory version of xl_free_select() */ +static void xl_shm_free_select(str *hp) +{ + if (hp && hp->s) + shm_free_select((select_t*)hp->s); +} + static int xl_get_avp(struct sip_msg *msg, str *res, str *hp, int hi, int hf) { int_str name, val; @@ -987,7 +995,35 @@ static int xl_get_special(struct sip_msg *msg, str *res, str *hp, int hi, int hf return 0; } -int xl_parse_format(char *s, xl_elog_p *el) +static int _xl_elog_free_all(xl_elog_p log, int shm) +{ + xl_elog_p t; + while(log) + { + t = log; + log = log->next; + if (t->free_f) + (*t->free_f)(&(t->hparam)); + if (shm) + shm_free(t); + else + pkg_free(t); + } + return 0; +} + +/* Parse an xl-formatted string pointed by s. + * el points to the resulted linked list that is allocated + * in shared memory when shm==1 otherwise in pkg memory. + * If parse_cb is not NULL then regular expression back references + * are passed to the parse_cb function that is supposed to farther parse + * the back reference and fill in the xl_elog_t structure. + * + * Return value: + * 0: success + * -1: error + */ +static int _xl_parse_format(char *s, xl_elog_p *el, int shm, xl_parse_cb parse_cb) { char *p, c; int n = 0; @@ -1010,7 +1046,10 @@ int xl_parse_format(char *s, xl_elog_p *el) while(*p) { e0 = e; - e = pkg_malloc(sizeof(xl_elog_t)); + if (shm) + e = shm_malloc(sizeof(xl_elog_t)); + else + e = pkg_malloc(sizeof(xl_elog_t)); if(!e) goto error; memset(e, 0, sizeof(xl_elog_t)); @@ -1047,6 +1086,35 @@ int xl_parse_format(char *s, xl_elog_p *el) e->itf = xl_get_special; e->hindex = '\t'; break; + case '0': + case '1': + case '2': + case '3': + case '4': + case '5': + case '6': + case '7': + case '8': + case '9': + /* Regular expression back reference found */ + if (!parse_cb) { + /* There is no callback function, hence the + * result will be written as it is. */ + e->itf = xl_get_special; + e->hindex = *p; + break; + } + name.s = p; + /* eat all the numeric characters */ + while ((*(p+1) >= '0') && (*(p+1) <= '9')) + p++; + name.len = p - name.s + 1; + if (parse_cb(&name, shm, e)) { + ERR("xlog: xl_parse_format: failed to parse '%.*s'\n", + name.len, name.s); + goto error; + } + break; default: /* not a special character, it will be just written to the result as it is */ @@ -1506,14 +1574,17 @@ int xl_parse_format(char *s, xl_elog_p *el) case '@': /* fill select structure and call resolve_select */ DBG("xlog: xl_parse_format: @\n"); - n=parse_select(&p, &sel); + if (shm) + n=shm_parse_select(&p, &sel); + else + n=parse_select(&p, &sel); if (n<0) { ERR("xlog: xl_parse_format: parse_select returned error\n"); goto error; } e->itf = xl_get_select; e->hparam.s = (char*)sel; - e->free_f = xl_free_select; + e->free_f = (shm) ? xl_shm_free_select : xl_free_select; p--; break; case '%': @@ -1537,11 +1608,43 @@ cont: return 0; error: - xl_elog_free_all(*el); + _xl_elog_free_all(*el, shm); *el = NULL; return -1; } +/* wrapper function for _xl_parse_format() + * pkg memory version + */ +int xl_parse_format(char *s, xl_elog_p *el) +{ + return _xl_parse_format(s, el, 0 /* pkg mem */, NULL /* callback */); +} + +/* wrapper function for _xl_parse_format() + * shm memory version + */ +int xl_shm_parse_format(char *s, xl_elog_p *el) +{ + return _xl_parse_format(s, el, 1 /* shm mem */, NULL /* callback */); +} + +/* wrapper function for _xl_parse_format() + * pkg memory version + */ +int xl_parse_format2(char *s, xl_elog_p *el, xl_parse_cb cb) +{ + return _xl_parse_format(s, el, 0 /* pkg mem */, cb); +} + +/* wrapper function for _xl_parse_format() + * shm memory version + */ +int xl_shm_parse_format2(char *s, xl_elog_p *el, xl_parse_cb cb) +{ + return _xl_parse_format(s, el, 1 /* shm mem */, cb); +} + int xl_print_log(struct sip_msg* msg, xl_elog_p log, char *buf, int *len) { int n, h; @@ -1624,17 +1727,32 @@ done: return 0; } +/* wrapper function for _xl_elog_free_all() + * pkg memory version + */ int xl_elog_free_all(xl_elog_p log) { - xl_elog_p t; - while(log) - { - t = log; - log = log->next; - if (t->free_f) - (*t->free_f)(&(t->hparam)); - pkg_free(t); - } + return _xl_elog_free_all(log, 0 /* pkg mem */); +} + +/* wrapper function for _xl_elog_free_all() + * shm memory version + */ +int xl_elog_shm_free_all(xl_elog_p log) +{ + return _xl_elog_free_all(log, 1 /* shm mem */); +} + +int xl_bind(xl_api_t *xl_api) +{ + xl_api->xprint = xl_print_log; + xl_api->xparse = xl_parse_format; + xl_api->shm_xparse = xl_shm_parse_format; + xl_api->xparse2 = xl_parse_format2; + xl_api->shm_xparse2 = xl_shm_parse_format2; + xl_api->xfree = xl_elog_free_all; + xl_api->shm_xfree = xl_elog_shm_free_all; + xl_api->xnulstr = xl_get_nulstr; return 0; } diff --git a/modules_s/xlog/xl_lib.h b/modules_s/xlog/xl_lib.h index a1b5c5d..ca6651e 100644 --- a/modules_s/xlog/xl_lib.h +++ b/modules_s/xlog/xl_lib.h @@ -44,16 +44,46 @@ typedef struct _xl_elog struct _xl_elog *next; } xl_elog_t, *xl_elog_p; +/* callback function to parse the regular expression + * back references */ +typedef int (*xl_parse_cb) (str *, int, xl_elog_p); + typedef int (xl_elog_free_all_f)(xl_elog_p log); /* int xl_elog_free_all(xl_elog_p log); */ typedef int (xl_parse_format_f)(char *s, xl_elog_p *el); //int xl_parse_format(char *s, xl_elog_p *el); +typedef int (xl_parse_format2_f)(char *s, xl_elog_p *el, xl_parse_cb cb); typedef int (xl_print_log_f)(struct sip_msg*, xl_elog_t*, char*, int*); //int xl_print_log(struct sip_msg* msg, xl_elog_p log, char *buf, int *len); typedef str* (xl_get_nulstr_f)(void); +typedef struct xl_api { + xl_print_log_f *xprint; + xl_parse_format_f *xparse; + xl_parse_format_f *shm_xparse; + xl_parse_format2_f *xparse2; + xl_parse_format2_f *shm_xparse2; + xl_elog_free_all_f *xfree; + xl_elog_free_all_f *shm_xfree; + xl_get_nulstr_f *xnulstr; +} xl_api_t; + +typedef int (xl_bind_f)(xl_api_t *xl_api); + +/* bind to the xl_lib api */ +xl_bind_f xl_bind; +/* parse and free functions that work with pkg memory */ xl_elog_free_all_f xl_elog_free_all; xl_parse_format_f xl_parse_format; +/* parse and free functions that work with shm memory */ +xl_elog_free_all_f xl_elog_shm_free_all; +xl_parse_format_f xl_shm_parse_format; +/* parse function supporting regexp back references - pkg mem version */ +xl_parse_format2_f xl_parse_format2; +/* parse function supporting regexp back references - shm mem version */ +xl_parse_format2_f xl_shm_parse_format2; + + xl_print_log_f xl_print_log; xl_get_nulstr_f xl_get_nulstr; diff --git a/modules_s/xlog/xlog.c b/modules_s/xlog/xlog.c index 612d06f..6de99fa 100644 --- a/modules_s/xlog/xlog.c +++ b/modules_s/xlog/xlog.c @@ -67,10 +67,15 @@ static cmd_export_t cmds[]={ ONREPLY_ROUTE | BRANCH_ROUTE}, {"xdbg", xdbg, 1, xdbg_fixup, REQUEST_ROUTE | FAILURE_ROUTE | ONREPLY_ROUTE | BRANCH_ROUTE}, - {"xprint", (cmd_function)xl_print_log, NO_SCRIPT, 0, 0}, - {"xparse", (cmd_function)xl_parse_format, NO_SCRIPT, 0, 0}, - {"xfree", (cmd_function)xl_elog_free_all, NO_SCRIPT, 0, 0}, - {"xnulstr", (cmd_function)xl_get_nulstr, NO_SCRIPT, 0, 0}, + {"xbind", (cmd_function)xl_bind, NO_SCRIPT, 0, 0}, + {"xprint", (cmd_function)xl_print_log, NO_SCRIPT, 0, 0}, + {"xparse", (cmd_function)xl_parse_format, NO_SCRIPT, 0, 0}, + {"shm_xparse", (cmd_function)xl_shm_parse_format, NO_SCRIPT, 0, 0}, + {"xparse2", (cmd_function)xl_parse_format2, NO_SCRIPT, 0, 0}, + {"shm_xparse2", (cmd_function)xl_shm_parse_format2, NO_SCRIPT, 0, 0}, + {"xfree", (cmd_function)xl_elog_free_all, NO_SCRIPT, 0, 0}, + {"shm_xfree", (cmd_function)xl_elog_shm_free_all, NO_SCRIPT, 0, 0}, + {"xnulstr", (cmd_function)xl_get_nulstr, NO_SCRIPT, 0, 0}, {0,0,0,0,0} };