diff options
Diffstat (limited to 'src/responder/nss/nsssrv_cmd.c')
| -rw-r--r-- | src/responder/nss/nsssrv_cmd.c | 134 |
1 files changed, 133 insertions, 1 deletions
diff --git a/src/responder/nss/nsssrv_cmd.c b/src/responder/nss/nsssrv_cmd.c index 6ab32abd0..c8021a72d 100644 --- a/src/responder/nss/nsssrv_cmd.c +++ b/src/responder/nss/nsssrv_cmd.c @@ -169,6 +169,114 @@ struct setent_ctx { /**************************************************************************** * PASSWD db related functions ***************************************************************************/ +char *expand_homedir_template(TALLOC_CTX *mem_ctx, const char *template, + const char *username, uint32_t uid, + const char *domain) +{ + char *copy; + char *p; + char *n; + char *result = NULL; + char *res = NULL; + TALLOC_CTX *tmp_ctx = NULL; + + if (template == NULL) { + DEBUG(1, ("Missing template.\n")); + return NULL; + } + + tmp_ctx = talloc_new(NULL); + if (!tmp_ctx) return NULL; + + copy = talloc_strdup(tmp_ctx, template); + if (copy == NULL) { + DEBUG(1, ("talloc_strdup failed.\n")); + goto done; + } + + result = talloc_strdup(tmp_ctx, ""); + if (result == NULL) { + DEBUG(1, ("talloc_strdup failed.\n")); + goto done; + } + + p = copy; + while ( (n = strchr(p, '%')) != NULL) { + *n = '\0'; + n++; + if ( *n == '\0' ) { + DEBUG(1, ("format error, single %% at the end of the template.\n")); + goto done; + } + switch( *n ) { + case 'u': + if (username == NULL) { + DEBUG(1, ("Cannot expand user name template " + "because user name is empty.\n")); + goto done; + } + result = talloc_asprintf_append(result, "%s%s", p, + username); + break; + + case 'U': + if (uid == 0) { + DEBUG(1, ("Cannot expand uid template " + "because uid is invalid.\n")); + goto done; + } + result = talloc_asprintf_append(result, "%s%d", p, + uid); + break; + + case 'd': + if (domain == NULL) { + DEBUG(1, ("Cannot expand domain name template " + "because domain name is empty.\n")); + goto done; + } + result = talloc_asprintf_append(result, "%s%s", p, + domain); + break; + + case 'f': + if (domain == NULL || username == NULL) { + DEBUG(1, ("Cannot expand fully qualified name template " + "because domain or user name is empty.\n")); + goto done; + } + result = talloc_asprintf_append(result, "%s%s@%s", p, + username, domain); + break; + + case '%': + result = talloc_asprintf_append(result, "%s%%", p); + break; + + default: + DEBUG(1, ("format error, unknown template [%%%c].\n", *n)); + goto done; + } + + if (result == NULL) { + DEBUG(1, ("talloc_asprintf_append failed.\n")); + goto done; + } + + p = n + 1; + } + + result = talloc_asprintf_append(result, "%s", p); + if (result == NULL) { + DEBUG(1, ("talloc_asprintf_append failed.\n")); + goto done; + } + + res = talloc_move(mem_ctx, &result); +done: + talloc_zfree(tmp_ctx); + return res; +} static gid_t get_gid_override(struct ldb_message *msg, struct sss_domain_info *dom) @@ -178,6 +286,25 @@ static gid_t get_gid_override(struct ldb_message *msg, ldb_msg_find_attr_as_uint64(msg, SYSDB_GIDNUM, 0); } +static const char *get_homedir_override(TALLOC_CTX *mem_ctx, + struct ldb_message *msg, + struct nss_ctx *nctx, + struct sss_domain_info *dom, + const char *name, + uint32_t uid) +{ + if (dom->override_homedir) { + return expand_homedir_template(mem_ctx, dom->override_homedir, + name, uid, dom->name); + } else if (nctx->override_homedir) { + return expand_homedir_template(mem_ctx, nctx->override_homedir, + name, uid, dom->name); + } + + return talloc_strdup(mem_ctx, + ldb_msg_find_attr_as_string(msg, SYSDB_HOMEDIR, NULL)); +} + static int fill_pwent(struct sss_packet *packet, struct sss_domain_info *dom, struct nss_ctx *nctx, @@ -203,6 +330,7 @@ static int fill_pwent(struct sss_packet *packet, const char *namefmt = nctx->rctx->names->fq_fmt; bool packet_initialized = false; int ncret; + TALLOC_CTX *tmp_ctx = NULL; if (add_domain) dom_len = strlen(domain); @@ -210,6 +338,9 @@ static int fill_pwent(struct sss_packet *packet, num = 0; for (i = 0; i < *count; i++) { + talloc_zfree(tmp_ctx); + tmp_ctx = talloc_new(NULL); + msg = msgs[i]; name = ldb_msg_find_attr_as_string(msg, SYSDB_NAME, NULL); @@ -241,7 +372,7 @@ static int fill_pwent(struct sss_packet *packet, } gecos = ldb_msg_find_attr_as_string(msg, SYSDB_GECOS, NULL); - homedir = ldb_msg_find_attr_as_string(msg, SYSDB_HOMEDIR, NULL); + homedir = get_homedir_override(tmp_ctx, msg, nctx, dom, name, uid); shell = ldb_msg_find_attr_as_string(msg, SYSDB_SHELL, NULL); if (!gecos) gecos = ""; @@ -306,6 +437,7 @@ static int fill_pwent(struct sss_packet *packet, num++; } + talloc_zfree(tmp_ctx); done: *count = i; |