int ipa_get_options(TALLOC_CTX *memctx, struct confdb_ctx *cdb, const char *conf_path, struct sss_domain_info *dom, struct ipa_options **_opts) { struct ipa_options *opts; char *domain; char *server; char *realm; char *ipa_hostname; int ret; char hostname[HOST_NAME_MAX + 1]; opts = talloc_zero(memctx, struct ipa_options); if (!opts) return ENOMEM; ret = dp_get_options(opts, cdb, conf_path, ipa_basic_opts, IPA_OPTS_BASIC, &opts->basic); if (ret != EOK) { goto done; } domain = dp_opt_get_string(opts->basic, IPA_DOMAIN); if (!domain) { ret = dp_opt_set_string(opts->basic, IPA_DOMAIN, dom->name); if (ret != EOK) { goto done; } domain = dom->name; } server = dp_opt_get_string(opts->basic, IPA_SERVER); if (!server) { DEBUG(SSSDBG_CRIT_FAILURE, "No ipa server set, will use service discovery!\n"); } ipa_hostname = dp_opt_get_string(opts->basic, IPA_HOSTNAME); if (ipa_hostname == NULL) { ret = gethostname(hostname, HOST_NAME_MAX); if (ret != EOK) { DEBUG(SSSDBG_CRIT_FAILURE, "gethostname failed [%d][%s].\n", errno, strerror(errno)); ret = errno; goto done; } hostname[HOST_NAME_MAX] = '\0'; DEBUG(SSSDBG_TRACE_ALL, "Setting ipa_hostname to [%s].\n", hostname); ret = dp_opt_set_string(opts->basic, IPA_HOSTNAME, hostname); if (ret != EOK) { goto done; } } /* First check whether the realm has been manually specified */ realm = dp_opt_get_string(opts->basic, IPA_KRB5_REALM); if (!realm) { /* No explicit krb5_realm, use the IPA domain, transform to upper-case */ realm = get_uppercase_realm(opts, domain); if (!realm) { ret = ENOMEM; goto done; } ret = dp_opt_set_string(opts->basic, IPA_KRB5_REALM, realm); if (ret != EOK) { goto done; } } ret = EOK; *_opts = opts; done: if (ret != EOK) { talloc_zfree(opts); } return ret; }
errno_t sss_write_domain_mappings(struct sss_domain_info *domain, bool add_capaths) { struct sss_domain_info *dom; struct sss_domain_info *parent_dom; errno_t ret; errno_t err; TALLOC_CTX *tmp_ctx; const char *mapping_file; char *sanitized_domain; char *tmp_file = NULL; int fd = -1; mode_t old_mode; FILE *fstream = NULL; int i; bool capaths_started; char *uc_forest; char *uc_parent; if (domain == NULL || domain->name == NULL) { DEBUG(SSSDBG_CRIT_FAILURE, "No domain name provided\n"); return EINVAL; } tmp_ctx = talloc_new(NULL); if (!tmp_ctx) return ENOMEM; sanitized_domain = talloc_strdup(tmp_ctx, domain->name); if (sanitized_domain == NULL) { DEBUG(SSSDBG_CRIT_FAILURE, "talloc_strdup() failed\n"); return ENOMEM; } /* only alpha-numeric chars, dashes and underscores are allowed in * krb5 include directory */ for (i = 0; sanitized_domain[i] != '\0'; i++) { if (!isalnum(sanitized_domain[i]) && sanitized_domain[i] != '-' && sanitized_domain[i] != '_') { sanitized_domain[i] = '_'; } } mapping_file = talloc_asprintf(tmp_ctx, "%s/domain_realm_%s", KRB5_MAPPING_DIR, sanitized_domain); if (!mapping_file) { ret = ENOMEM; goto done; } DEBUG(SSSDBG_FUNC_DATA, "Mapping file for domain [%s] is [%s]\n", domain->name, mapping_file); tmp_file = talloc_asprintf(tmp_ctx, "%sXXXXXX", mapping_file); if (tmp_file == NULL) { ret = ENOMEM; goto done; } old_mode = umask(077); fd = mkstemp(tmp_file); umask(old_mode); if (fd < 0) { DEBUG(SSSDBG_OP_FAILURE, "creating the temp file [%s] for domain-realm " "mappings failed.", tmp_file); ret = EIO; talloc_zfree(tmp_ctx); goto done; } fstream = fdopen(fd, "a"); if (!fstream) { ret = errno; DEBUG(SSSDBG_OP_FAILURE, "fdopen failed [%d]: %s\n", ret, strerror(ret)); ret = close(fd); if (ret != 0) { ret = errno; DEBUG(SSSDBG_CRIT_FAILURE, "fclose failed [%d][%s].\n", ret, strerror(ret)); /* Nothing to do here, just report the failure */ } ret = EIO; goto done; } ret = fprintf(fstream, "[domain_realm]\n"); if (ret < 0) { DEBUG(SSSDBG_OP_FAILURE, "fprintf failed\n"); ret = EIO; goto done; } for (dom = get_next_domain(domain, true); dom && IS_SUBDOMAIN(dom); /* if we get back to a parent, stop */ dom = get_next_domain(dom, false)) { ret = fprintf(fstream, ".%s = %s\n%s = %s\n", dom->name, dom->realm, dom->name, dom->realm); if (ret < 0) { DEBUG(SSSDBG_CRIT_FAILURE, "fprintf failed\n"); goto done; } } if (add_capaths) { capaths_started = false; parent_dom = domain; uc_parent = get_uppercase_realm(tmp_ctx, parent_dom->name); if (uc_parent == NULL) { DEBUG(SSSDBG_OP_FAILURE, "get_uppercase_realm failed.\n"); ret = ENOMEM; goto done; } for (dom = get_next_domain(domain, true); dom && IS_SUBDOMAIN(dom); /* if we get back to a parent, stop */ dom = get_next_domain(dom, false)) { if (dom->forest == NULL) { continue; } uc_forest = get_uppercase_realm(tmp_ctx, dom->forest); if (uc_forest == NULL) { DEBUG(SSSDBG_OP_FAILURE, "get_uppercase_realm failed.\n"); ret = ENOMEM; goto done; } if (!capaths_started) { ret = fprintf(fstream, "[capaths]\n"); if (ret < 0) { DEBUG(SSSDBG_OP_FAILURE, "fprintf failed\n"); ret = EIO; goto done; } capaths_started = true; } ret = fprintf(fstream, "%s = {\n %s = %s\n}\n%s = {\n %s = %s\n}\n", dom->realm, uc_parent, uc_forest, uc_parent, dom->realm, uc_forest); if (ret < 0) { DEBUG(SSSDBG_CRIT_FAILURE, "fprintf failed\n"); goto done; } } } ret = fclose(fstream); fstream = NULL; if (ret != 0) { ret = errno; DEBUG(SSSDBG_CRIT_FAILURE, "fclose failed [%d][%s].\n", ret, strerror(ret)); goto done; } ret = rename(tmp_file, mapping_file); if (ret == -1) { ret = errno; DEBUG(SSSDBG_CRIT_FAILURE, "rename failed [%d][%s].\n", ret, strerror(ret)); goto done; } talloc_zfree(tmp_file); ret = chmod(mapping_file, 0644); if (ret == -1) { ret = errno; DEBUG(SSSDBG_CRIT_FAILURE, "fchmod failed [%d][%s].\n", ret, strerror(ret)); goto done; } ret = EOK; done: err = sss_krb5_touch_config(); if (err != EOK) { DEBUG(SSSDBG_CRIT_FAILURE, "Unable to change last modification time " "of krb5.conf. Created mappings may not be loaded.\n"); /* Ignore */ } if (fstream) { err = fclose(fstream); if (err != 0) { err = errno; DEBUG(SSSDBG_CRIT_FAILURE, "fclose failed [%d][%s].\n", err, strerror(err)); /* Nothing to do here, just report the failure */ } } if (tmp_file) { err = unlink(tmp_file); if (err < 0) { err = errno; DEBUG(SSSDBG_MINOR_FAILURE, "Could not remove file [%s]: [%d]: %s", tmp_file, err, strerror(err)); } } talloc_free(tmp_ctx); return ret; }
errno_t sss_get_domain_mappings_content(TALLOC_CTX *mem_ctx, struct sss_domain_info *domain, char **content) { int ret; char *o = NULL; struct sss_domain_info *dom; struct sss_domain_info *parent_dom; char *uc_parent = NULL; char *uc_forest = NULL; char *parent_capaths = NULL; bool capaths_started = false; if (domain == NULL || content == NULL) { DEBUG(SSSDBG_CRIT_FAILURE, "Missing parameter.\n"); return EINVAL; } o = talloc_strdup(mem_ctx, "[domain_realm]\n"); if (o == NULL) { DEBUG(SSSDBG_OP_FAILURE, "talloc_strdup failed.\n"); ret = ENOMEM; goto done; } /* This loops skips the starting parent and start rigth with the first * subdomain. Although in all the interesting cases (AD and IPA) the * default is that realm and DNS domain are the same strings (expect case) * and no domain_realm mapping is needed we might consider to add this * domain here as well to cover corner cases? */ for (dom = get_next_domain(domain, SSS_GND_DESCEND); dom && IS_SUBDOMAIN(dom); /* if we get back to a parent, stop */ dom = get_next_domain(dom, 0)) { o = talloc_asprintf_append(o, ".%s = %s\n%s = %s\n", dom->name, dom->realm, dom->name, dom->realm); if (o == NULL) { DEBUG(SSSDBG_OP_FAILURE, "talloc_asprintf_append failed.\n"); ret = ENOMEM; goto done; } } parent_dom = domain; uc_parent = get_uppercase_realm(mem_ctx, parent_dom->name); if (uc_parent == NULL) { DEBUG(SSSDBG_OP_FAILURE, "get_uppercase_realm failed.\n"); ret = ENOMEM; goto done; } for (dom = get_next_domain(domain, SSS_GND_DESCEND); dom && IS_SUBDOMAIN(dom); /* if we get back to a parent, stop */ dom = get_next_domain(dom, 0)) { if (dom->forest == NULL) { continue; } talloc_free(uc_forest); uc_forest = get_uppercase_realm(mem_ctx, dom->forest); if (uc_forest == NULL) { DEBUG(SSSDBG_OP_FAILURE, "get_uppercase_realm failed.\n"); ret = ENOMEM; goto done; } if (!capaths_started) { o = talloc_asprintf_append(o, "[capaths]\n"); if (o == NULL) { DEBUG(SSSDBG_OP_FAILURE, "talloc_asprintf_append failed.\n"); ret = ENOMEM; goto done; } capaths_started = true; } o = talloc_asprintf_append(o, "%s = {\n %s = %s\n}\n", dom->realm, uc_parent, uc_forest); if (o == NULL) { DEBUG(SSSDBG_OP_FAILURE, "talloc_asprintf_append failed.\n"); ret = ENOMEM; goto done; } if (parent_capaths == NULL) { parent_capaths = talloc_asprintf(mem_ctx, " %s = %s\n", dom->realm, uc_forest); } else { parent_capaths = talloc_asprintf_append(parent_capaths, " %s = %s\n", dom->realm, uc_forest); } if (parent_capaths == NULL) { DEBUG(SSSDBG_OP_FAILURE, "talloc_asprintf/talloc_asprintf_append failed.\n"); ret = ENOMEM; goto done; } } if (parent_capaths != NULL) { o = talloc_asprintf_append(o, "%s = {\n%s}\n", uc_parent, parent_capaths); if (o == NULL) { DEBUG(SSSDBG_OP_FAILURE, "talloc_asprintf_append failed.\n"); ret = ENOMEM; goto done; } } ret = EOK; done: talloc_free(parent_capaths); talloc_free(uc_parent); talloc_free(uc_forest); if (ret == EOK) { *content = o; } else { talloc_free(o); } return ret; }