diff options
Diffstat (limited to 'crypto/conf/conf_mod.c')
| -rw-r--r-- | crypto/conf/conf_mod.c | 878 |
1 files changed, 426 insertions, 452 deletions
diff --git a/crypto/conf/conf_mod.c b/crypto/conf/conf_mod.c index df1642a0a5..9acfca4f71 100644 --- a/crypto/conf/conf_mod.c +++ b/crypto/conf/conf_mod.c @@ -1,6 +1,7 @@ /* conf_mod.c */ -/* Written by Stephen Henson (steve@openssl.org) for the OpenSSL - * project 2001. +/* + * Written by Stephen Henson (steve@openssl.org) for the OpenSSL project + * 2001. */ /* ==================================================================== * Copyright (c) 2001 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -64,45 +65,41 @@ #include <openssl/dso.h> #include <openssl/x509.h> - #define DSO_mod_init_name "OPENSSL_init" #define DSO_mod_finish_name "OPENSSL_finish" - -/* This structure contains a data about supported modules. - * entries in this table correspond to either dynamic or - * static modules. +/* + * This structure contains a data about supported modules. entries in this + * table correspond to either dynamic or static modules. */ -struct conf_module_st - { - /* DSO of this module or NULL if static */ - DSO *dso; - /* Name of the module */ - char *name; - /* Init function */ - conf_init_func *init; - /* Finish function */ - conf_finish_func *finish; - /* Number of successfully initialized modules */ - int links; - void *usr_data; - }; - - -/* This structure contains information about modules that have been - * successfully initialized. There may be more than one entry for a - * given module. +struct conf_module_st { + /* DSO of this module or NULL if static */ + DSO *dso; + /* Name of the module */ + char *name; + /* Init function */ + conf_init_func *init; + /* Finish function */ + conf_finish_func *finish; + /* Number of successfully initialized modules */ + int links; + void *usr_data; +}; + +/* + * This structure contains information about modules that have been + * successfully initialized. There may be more than one entry for a given + * module. */ -struct conf_imodule_st - { - CONF_MODULE *pmod; - char *name; - char *value; - unsigned long flags; - void *usr_data; - }; +struct conf_imodule_st { + CONF_MODULE *pmod; + char *name; + char *value; + unsigned long flags; + void *usr_data; +}; static STACK_OF(CONF_MODULE) *supported_modules = NULL; static STACK_OF(CONF_IMODULE) *initialized_modules = NULL; @@ -110,514 +107,491 @@ static STACK_OF(CONF_IMODULE) *initialized_modules = NULL; static void module_free(CONF_MODULE *md); static void module_finish(CONF_IMODULE *imod); static int module_run(const CONF *cnf, char *name, char *value, - unsigned long flags); + unsigned long flags); static CONF_MODULE *module_add(DSO *dso, const char *name, - conf_init_func *ifunc, conf_finish_func *ffunc); + conf_init_func *ifunc, + conf_finish_func *ffunc); static CONF_MODULE *module_find(char *name); static int module_init(CONF_MODULE *pmod, char *name, char *value, - const CONF *cnf); + const CONF *cnf); static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value, - unsigned long flags); + unsigned long flags); /* Main function: load modules from a CONF structure */ int CONF_modules_load(const CONF *cnf, const char *appname, - unsigned long flags) - { - STACK_OF(CONF_VALUE) *values; - CONF_VALUE *vl; - char *vsection = NULL; + unsigned long flags) +{ + STACK_OF(CONF_VALUE) *values; + CONF_VALUE *vl; + char *vsection = NULL; - int ret, i; + int ret, i; - if (!cnf) - return 1; + if (!cnf) + return 1; - if (appname) - vsection = NCONF_get_string(cnf, NULL, appname); + if (appname) + vsection = NCONF_get_string(cnf, NULL, appname); - if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION))) - vsection = NCONF_get_string(cnf, NULL, "openssl_conf"); + if (!appname || (!vsection && (flags & CONF_MFLAGS_DEFAULT_SECTION))) + vsection = NCONF_get_string(cnf, NULL, "openssl_conf"); - if (!vsection) - { - ERR_clear_error(); - return 1; - } + if (!vsection) { + ERR_clear_error(); + return 1; + } - values = NCONF_get_section(cnf, vsection); + values = NCONF_get_section(cnf, vsection); - if (!values) - return 0; + if (!values) + return 0; - for (i = 0; i < sk_CONF_VALUE_num(values); i++) - { - vl = sk_CONF_VALUE_value(values, i); - ret = module_run(cnf, vl->name, vl->value, flags); - if (ret <= 0) - if(!(flags & CONF_MFLAGS_IGNORE_ERRORS)) - return ret; - } + for (i = 0; i < sk_CONF_VALUE_num(values); i++) { + vl = sk_CONF_VALUE_value(values, i); + ret = module_run(cnf, vl->name, vl->value, flags); + if (ret <= 0) + if (!(flags & CONF_MFLAGS_IGNORE_ERRORS)) + return ret; + } - return 1; + return 1; - } +} int CONF_modules_load_file(const char *filename, const char *appname, - unsigned long flags) - { - char *file = NULL; - CONF *conf = NULL; - int ret = 0; - conf = NCONF_new(NULL); - if (!conf) - goto err; - - if (filename == NULL) - { - file = CONF_get1_default_config_file(); - if (!file) - goto err; - } - else - file = (char *)filename; - - if (NCONF_load(conf, file, NULL) <= 0) - { - if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) && - (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE)) - { - ERR_clear_error(); - ret = 1; - } - goto err; - } - - ret = CONF_modules_load(conf, appname, flags); - - err: - if (filename == NULL) - OPENSSL_free(file); - NCONF_free(conf); - - return ret; - } + unsigned long flags) +{ + char *file = NULL; + CONF *conf = NULL; + int ret = 0; + conf = NCONF_new(NULL); + if (!conf) + goto err; + + if (filename == NULL) { + file = CONF_get1_default_config_file(); + if (!file) + goto err; + } else + file = (char *)filename; + + if (NCONF_load(conf, file, NULL) <= 0) { + if ((flags & CONF_MFLAGS_IGNORE_MISSING_FILE) && + (ERR_GET_REASON(ERR_peek_last_error()) == CONF_R_NO_SUCH_FILE)) { + ERR_clear_error(); + ret = 1; + } + goto err; + } + + ret = CONF_modules_load(conf, appname, flags); + + err: + if (filename == NULL) + OPENSSL_free(file); + NCONF_free(conf); + + return ret; +} static int module_run(const CONF *cnf, char *name, char *value, - unsigned long flags) - { - CONF_MODULE *md; - int ret; - - md = module_find(name); - - /* Module not found: try to load DSO */ - if (!md && !(flags & CONF_MFLAGS_NO_DSO)) - md = module_load_dso(cnf, name, value, flags); - - if (!md) - { - if (!(flags & CONF_MFLAGS_SILENT)) - { - CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME); - ERR_add_error_data(2, "module=", name); - } - return -1; - } - - ret = module_init(md, name, value, cnf); - - if (ret <= 0) - { - if (!(flags & CONF_MFLAGS_SILENT)) - { - char rcode[DECIMAL_SIZE(ret)+1]; - CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR); - BIO_snprintf(rcode, sizeof rcode, "%-8d", ret); - ERR_add_error_data(6, "module=", name, ", value=", value, ", retcode=", rcode); - } - } - - return ret; - } + unsigned long flags) +{ + CONF_MODULE *md; + int ret; + + md = module_find(name); + + /* Module not found: try to load DSO */ + if (!md && !(flags & CONF_MFLAGS_NO_DSO)) + md = module_load_dso(cnf, name, value, flags); + + if (!md) { + if (!(flags & CONF_MFLAGS_SILENT)) { + CONFerr(CONF_F_MODULE_RUN, CONF_R_UNKNOWN_MODULE_NAME); + ERR_add_error_data(2, "module=", name); + } + return -1; + } + + ret = module_init(md, name, value, cnf); + + if (ret <= 0) { + if (!(flags & CONF_MFLAGS_SILENT)) { + char rcode[DECIMAL_SIZE(ret) + 1]; + CONFerr(CONF_F_MODULE_RUN, CONF_R_MODULE_INITIALIZATION_ERROR); + BIO_snprintf(rcode, sizeof rcode, "%-8d", ret); + ERR_add_error_data(6, "module=", name, ", value=", value, + ", retcode=", rcode); + } + } + + return ret; +} /* Load a module from a DSO */ static CONF_MODULE *module_load_dso(const CONF *cnf, char *name, char *value, - unsigned long flags) - { - DSO *dso = NULL; - conf_init_func *ifunc; - conf_finish_func *ffunc; - char *path = NULL; - int errcode = 0; - CONF_MODULE *md; - /* Look for alternative path in module section */ - path = NCONF_get_string(cnf, value, "path"); - if (!path) - { - ERR_clear_error(); - path = name; - } - dso = DSO_load(NULL, path, NULL, 0); - if (!dso) - { - errcode = CONF_R_ERROR_LOADING_DSO; - goto err; - } - ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name); - if (!ifunc) - { - errcode = CONF_R_MISSING_INIT_FUNCTION; - goto err; - } - ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name); - /* All OK, add module */ - md = module_add(dso, name, ifunc, ffunc); - - if (!md) - goto err; - - return md; - - err: - if (dso) - DSO_free(dso); - CONFerr(CONF_F_MODULE_LOAD_DSO, errcode); - ERR_add_error_data(4, "module=", name, ", path=", path); - return NULL; - } + unsigned long flags) +{ + DSO *dso = NULL; + conf_init_func *ifunc; + conf_finish_func *ffunc; + char *path = NULL; + int errcode = 0; + CONF_MODULE *md; + /* Look for alternative path in module section */ + path = NCONF_get_string(cnf, value, "path"); + if (!path) { + ERR_clear_error(); + path = name; + } + dso = DSO_load(NULL, path, NULL, 0); + if (!dso) { + errcode = CONF_R_ERROR_LOADING_DSO; + goto err; + } + ifunc = (conf_init_func *)DSO_bind_func(dso, DSO_mod_init_name); + if (!ifunc) { + errcode = CONF_R_MISSING_INIT_FUNCTION; + goto err; + } + ffunc = (conf_finish_func *)DSO_bind_func(dso, DSO_mod_finish_name); + /* All OK, add module */ + md = module_add(dso, name, ifunc, ffunc); + + if (!md) + goto err; + + return md; + + err: + if (dso) + DSO_free(dso); + CONFerr(CONF_F_MODULE_LOAD_DSO, errcode); + ERR_add_error_data(4, "module=", name, ", path=", path); + return NULL; +} /* add module to list */ static CONF_MODULE *module_add(DSO *dso, const char *name, - conf_init_func *ifunc, conf_finish_func *ffunc) - { - CONF_MODULE *tmod = NULL; - if (supported_modules == NULL) - supported_modules = sk_CONF_MODULE_new_null(); - if (supported_modules == NULL) - return NULL; - tmod = OPENSSL_malloc(sizeof(CONF_MODULE)); - if (tmod == NULL) - return NULL; - - tmod->dso = dso; - tmod->name = BUF_strdup(name); - tmod->init = ifunc; - tmod->finish = ffunc; - tmod->links = 0; - - if (!sk_CONF_MODULE_push(supported_modules, tmod)) - { - OPENSSL_free(tmod); - return NULL; - } - - return tmod; - } - -/* Find a module from the list. We allow module names of the - * form modname.XXXX to just search for modname to allow the - * same module to be initialized more than once. + conf_init_func *ifunc, conf_finish_func *ffunc) +{ + CONF_MODULE *tmod = NULL; + if (supported_modules == NULL) + supported_modules = sk_CONF_MODULE_new_null(); + if (supported_modules == NULL) + return NULL; + tmod = OPENSSL_malloc(sizeof(CONF_MODULE)); + if (tmod == NULL) + return NULL; + + tmod->dso = dso; + tmod->name = BUF_strdup(name); + tmod->init = ifunc; + tmod->finish = ffunc; + tmod->links = 0; + + if (!sk_CONF_MODULE_push(supported_modules, tmod)) { + OPENSSL_free(tmod); + return NULL; + } + + return tmod; +} + +/* + * Find a module from the list. We allow module names of the form + * modname.XXXX to just search for modname to allow the same module to be + * initialized more than once. */ static CONF_MODULE *module_find(char *name) - { - CONF_MODULE *tmod; - int i, nchar; - char *p; - p = strrchr(name, '.'); +{ + CONF_MODULE *tmod; + int i, nchar; + char *p; + p = strrchr(name, '.'); - if (p) - nchar = p - name; - else - nchar = strlen(name); + if (p) + nchar = p - name; + else + nchar = strlen(name); - for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++) - { - tmod = sk_CONF_MODULE_value(supported_modules, i); - if (!strncmp(tmod->name, name, nchar)) - return tmod; - } + for (i = 0; i < sk_CONF_MODULE_num(supported_modules); i++) { + tmod = sk_CONF_MODULE_value(supported_modules, i); + if (!strncmp(tmod->name, name, nchar)) + return tmod; + } - return NULL; + return NULL; - } +} /* initialize a module */ static int module_init(CONF_MODULE *pmod, char *name, char *value, - const CONF *cnf) - { - int ret = 1; - int init_called = 0; - CONF_IMODULE *imod = NULL; - - /* Otherwise add initialized module to list */ - imod = OPENSSL_malloc(sizeof(CONF_IMODULE)); - if (!imod) - goto err; - - imod->pmod = pmod; - imod->name = BUF_strdup(name); - imod->value = BUF_strdup(value); - imod->usr_data = NULL; - - if (!imod->name || !imod->value) - goto memerr; - - /* Try to initialize module */ - if(pmod->init) - { - ret = pmod->init(imod, cnf); - init_called = 1; - /* Error occurred, exit */ - if (ret <= 0) - goto err; - } - - if (initialized_modules == NULL) - { - initialized_modules = sk_CONF_IMODULE_new_null(); - if (!initialized_modules) - { - CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); - goto err; - } - } - - if (!sk_CONF_IMODULE_push(initialized_modules, imod)) - { - CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); - goto err; - } - - pmod->links++; - - return ret; - - err: - - /* We've started the module so we'd better finish it */ - if (pmod->finish && init_called) - pmod->finish(imod); - - memerr: - if (imod) - { - if (imod->name) - OPENSSL_free(imod->name); - if (imod->value) - OPENSSL_free(imod->value); - OPENSSL_free(imod); - } - - return -1; - - } - -/* Unload any dynamic modules that have a link count of zero: - * i.e. have no active initialized modules. If 'all' is set - * then all modules are unloaded including static ones. + const CONF *cnf) +{ + int ret = 1; + int init_called = 0; + CONF_IMODULE *imod = NULL; + + /* Otherwise add initialized module to list */ + imod = OPENSSL_malloc(sizeof(CONF_IMODULE)); + if (!imod) + goto err; + + imod->pmod = pmod; + imod->name = BUF_strdup(name); + imod->value = BUF_strdup(value); + imod->usr_data = NULL; + + if (!imod->name || !imod->value) + goto memerr; + + /* Try to initialize module */ + if (pmod->init) { + ret = pmod->init(imod, cnf); + init_called = 1; + /* Error occurred, exit */ + if (ret <= 0) + goto err; + } + + if (initialized_modules == NULL) { + initialized_modules = sk_CONF_IMODULE_new_null(); + if (!initialized_modules) { + CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); + goto err; + } + } + + if (!sk_CONF_IMODULE_push(initialized_modules, imod)) { + CONFerr(CONF_F_MODULE_INIT, ERR_R_MALLOC_FAILURE); + goto err; + } + + pmod->links++; + + return ret; + + err: + + /* We've started the module so we'd better finish it */ + if (pmod->finish && init_called) + pmod->finish(imod); + + memerr: + if (imod) { + if (imod->name) + OPENSSL_free(imod->name); + if (imod->value) + OPENSSL_free(imod->value); + OPENSSL_free(imod); + } + + return -1; + +} + +/* + * Unload any dynamic modules that have a link count of zero: i.e. have no + * active initialized modules. If 'all' is set then all modules are unloaded + * including static ones. */ void CONF_modules_unload(int all) - { - int i; - CONF_MODULE *md; - CONF_modules_finish(); - /* unload modules in reverse order */ - for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--) - { - md = sk_CONF_MODULE_value(supported_modules, i); - /* If static or in use and 'all' not set ignore it */ - if (((md->links > 0) || !md->dso) && !all) - continue; - /* Since we're working in reverse this is OK */ - (void)sk_CONF_MODULE_delete(supported_modules, i); - module_free(md); - } - if (sk_CONF_MODULE_num(supported_modules) == 0) - { - sk_CONF_MODULE_free(supported_modules); - supported_modules = NULL; - } - } +{ + int i; + CONF_MODULE *md; + CONF_modules_finish(); + /* unload modules in reverse order */ + for (i = sk_CONF_MODULE_num(supported_modules) - 1; i >= 0; i--) { + md = sk_CONF_MODULE_value(supported_modules, i); + /* If static or in use and 'all' not set ignore it */ + if (((md->links > 0) || !md->dso) && !all) + continue; + /* Since we're working in reverse this is OK */ + (void)sk_CONF_MODULE_delete(supported_modules, i); + module_free(md); + } + if (sk_CONF_MODULE_num(supported_modules) == 0) { + sk_CONF_MODULE_free(supported_modules); + supported_modules = NULL; + } +} /* unload a single module */ static void module_free(CONF_MODULE *md) - { - if (md->dso) - DSO_free(md->dso); - OPENSSL_free(md->name); - OPENSSL_free(md); - } +{ + if (md->dso) + DSO_free(md->dso); + OPENSSL_free(md->name); + OPENSSL_free(md); +} /* finish and free up all modules instances */ void CONF_modules_finish(void) - { - CONF_IMODULE *imod; - while (sk_CONF_IMODULE_num(initialized_modules) > 0) - { - imod = sk_CONF_IMODULE_pop(initialized_modules); - module_finish(imod); - } - sk_CONF_IMODULE_free(initialized_modules); - initialized_modules = NULL; - } +{ + CONF_IMODULE *imod; + while (sk_CONF_IMODULE_num(initialized_modules) > 0) { + imod = sk_CONF_IMODULE_pop(initialized_modules); + module_finish(imod); + } + sk_CONF_IMODULE_free(initialized_modules); + initialized_modules = NULL; +} /* finish a module instance */ static void module_finish(CONF_IMODULE *imod) - { - if (imod->pmod->finish) - imod->pmod->finish(imod); - imod->pmod->links--; - OPENSSL_free(imod->name); - OPENSSL_free(imod->value); - OPENSSL_free(imod); - } +{ + if (imod->pmod->finish) + imod->pmod->finish(imod); + imod->pmod->links--; + OPENSSL_free(imod->name); + OPENSSL_free(imod->value); + OPENSSL_free(imod); +} /* Add a static module to OpenSSL */ -int CONF_module_add(const char *name, conf_init_func *ifunc, - conf_finish_func *ffunc) - { - if (module_add(NULL, name, ifunc, ffunc)) - return 1; - else - return 0; - } +int CONF_module_add(const char *name, conf_init_func *ifunc, + conf_finish_func *ffunc) +{ + if (module_add(NULL, name, ifunc, ffunc)) + return 1; + else + return 0; +} void CONF_modules_free(void) - { - CONF_modules_finish(); - CONF_modules_unload(1); - } +{ + CONF_modules_finish(); + CONF_modules_unload(1); +} /* Utility functions */ const char *CONF_imodule_get_name(const CONF_IMODULE *md) - { - return md->name; - } +{ + return md->name; +} const char *CONF_imodule_get_value(const CONF_IMODULE *md) - { - return md->value; - } +{ + return md->value; +} void *CONF_imodule_get_usr_data(const CONF_IMODULE *md) - { - return md->usr_data; - } +{ + return md->usr_data; +} void CONF_imodule_set_usr_data(CONF_IMODULE *md, void *usr_data) - { - md->usr_data = usr_data; - } +{ + md->usr_data = usr_data; +} CONF_MODULE *CONF_imodule_get_module(const CONF_IMODULE *md) - { - return md->pmod; - } +{ + return md->pmod; +} unsigned long CONF_imodule_get_flags(const CONF_IMODULE *md) - { - return md->flags; - } +{ + return md->flags; +} void CONF_imodule_set_flags(CONF_IMODULE *md, unsigned long flags) - { - md->flags = flags; - } +{ + md->flags = flags; +} void *CONF_module_get_usr_data(CONF_MODULE *pmod) - { - return pmod->usr_data; - } +{ + return pmod->usr_data; +} void CONF_module_set_usr_data(CONF_MODULE *pmod, void *usr_data) - { - pmod->usr_data = usr_data; - } +{ + pmod->usr_data = usr_data; +} /* Return default config file name */ char *CONF_get1_default_config_file(void) - { - char *file; - int len; +{ + char *file; + int len; - file = getenv("OPENSSL_CONF"); - if (file) - return BUF_strdup(file); + file = getenv("OPENSSL_CONF"); + if (file) + return BUF_strdup(file); - len = strlen(X509_get_default_cert_area()); + len = strlen(X509_get_default_cert_area()); #ifndef OPENSSL_SYS_VMS - len++; + len++; #endif - len += strlen(OPENSSL_CONF); + len += strlen(OPENSSL_CONF); - file = OPENSSL_malloc(len + 1); + file = OPENSSL_malloc(len + 1); - if (!file) - return NULL; - BUF_strlcpy(file,X509_get_default_cert_area(),len + 1); + if (!file) + return NULL; + BUF_strlcpy(file, X509_get_default_cert_area(), len + 1); #ifndef OPENSSL_SYS_VMS - BUF_strlcat(file,"/",len + 1); + BUF_strlcat(file, "/", len + 1); #endif - BUF_strlcat(file,OPENSSL_CONF,len + 1); + BUF_strlcat(file, OPENSSL_CONF, len + 1); - return file; - } + return file; +} -/* This function takes a list separated by 'sep' and calls the - * callback function giving the start and length of each member - * optionally stripping leading and trailing whitespace. This can - * be used to parse comma separated lists for example. +/* + * This function takes a list separated by 'sep' and calls the callback + * function giving the start and length of each member optionally stripping + * leading and trailing whitespace. This can be used to parse comma separated + * lists for example. */ int CONF_parse_list(const char *list_, int sep, int nospc, - int (*list_cb)(const char *elem, int len, void *usr), void *arg) - { - int ret; - const char *lstart, *tmpend, *p; - - if(list_ == NULL) - { - CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL); - return 0; - } - - lstart = list_; - for(;;) - { - if (nospc) - { - while(*lstart && isspace((unsigned char)*lstart)) - lstart++; - } - p = strchr(lstart, sep); - if (p == lstart || !*lstart) - ret = list_cb(NULL, 0, arg); - else - { - if (p) - tmpend = p - 1; - else - tmpend = lstart + strlen(lstart) - 1; - if (nospc) - { - while(isspace((unsigned char)*tmpend)) - tmpend--; - } - ret = list_cb(lstart, tmpend - lstart + 1, arg); - } - if (ret <= 0) - return ret; - if (p == NULL) - return 1; - lstart = p + 1; - } - } - + int (*list_cb) (const char *elem, int len, void *usr), + void *arg) +{ + int ret; + const char *lstart, *tmpend, *p; + + if (list_ == NULL) { + CONFerr(CONF_F_CONF_PARSE_LIST, CONF_R_LIST_CANNOT_BE_NULL); + return 0; + } + + lstart = list_; + for (;;) { + if (nospc) { + while (*lstart && isspace((unsigned char)*lstart)) + lstart++; + } + p = strchr(lstart, sep); + if (p == lstart || !*lstart) + ret = list_cb(NULL, 0, arg); + else { + if (p) + tmpend = p - 1; + else + tmpend = lstart + strlen(lstart) - 1; + if (nospc) { + while (isspace((unsigned char)*tmpend)) + tmpend--; + } + ret = list_cb(lstart, tmpend - lstart + 1, arg); + } + if (ret <= 0) + return ret; + if (p == NULL) + return 1; + lstart = p + 1; + } +} |