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https://sourceware.org/git/glibc.git
synced 2025-08-08 17:42:12 +03:00
2.5-18.1
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@@ -83,6 +83,9 @@ hesiod_init(void **context) {
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ctx->LHS = NULL;
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ctx->RHS = NULL;
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ctx->res = NULL;
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/* Set default query classes. */
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ctx->classes[0] = C_IN;
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ctx->classes[1] = C_HS;
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configname = __secure_getenv("HESIOD_CONFIG");
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if (!configname)
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@@ -234,15 +237,12 @@ hesiod_resolve(void *context, const char *name, const char *type) {
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return (NULL);
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}
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if ((retvec = get_txt_records(ctx, C_IN, bindname))) {
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free(bindname);
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return (retvec);
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}
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retvec = get_txt_records(ctx, ctx->classes[0], bindname);
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if (retvec == NULL && (errno == ENOENT || errno == ECONNREFUSED) && ctx->classes[1])
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retvec = get_txt_records(ctx, ctx->classes[1], bindname);
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if (errno != ENOENT && errno != ECONNREFUSED)
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return (NULL);
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retvec = get_txt_records(ctx, C_HS, bindname);
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free(bindname);
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return (retvec);
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}
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@@ -261,7 +261,6 @@ hesiod_free_list(void *context, char **list) {
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*/
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static int
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parse_config_file(struct hesiod_p *ctx, const char *filename) {
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char *key, *data, *cp, **cpp;
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char buf[MAXDNAME+7];
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FILE *fp;
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@@ -272,6 +271,9 @@ parse_config_file(struct hesiod_p *ctx, const char *filename) {
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free(ctx->RHS);
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free(ctx->LHS);
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ctx->RHS = ctx->LHS = 0;
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/* Set default query classes. */
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ctx->classes[0] = C_IN;
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ctx->classes[1] = C_HS;
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/*
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* Now open and parse the file...
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@@ -280,6 +282,8 @@ parse_config_file(struct hesiod_p *ctx, const char *filename) {
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return (-1);
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while (fgets(buf, sizeof(buf), fp) != NULL) {
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char *key, *data, *cp, **cpp;
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cp = buf;
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if (*cp == '#' || *cp == '\n' || *cp == '\r')
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continue;
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@@ -297,17 +301,36 @@ parse_config_file(struct hesiod_p *ctx, const char *filename) {
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cp++;
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*cp++ = '\0';
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if (strcmp(key, "lhs") == 0)
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cpp = NULL;
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if (strcasecmp(key, "lhs") == 0)
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cpp = &ctx->LHS;
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else if (strcmp(key, "rhs") == 0)
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else if (strcasecmp(key, "rhs") == 0)
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cpp = &ctx->RHS;
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else
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continue;
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*cpp = malloc(strlen(data) + 1);
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if (!*cpp)
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goto cleanup;
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strcpy(*cpp, data);
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if (cpp) {
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*cpp = strdup(data);
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if (!*cpp)
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goto cleanup;
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} else if (strcasecmp(key, "classes") == 0) {
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int n = 0;
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while (*data && n < 2) {
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cp = strchrnul(data, ',');
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if (*cp != '\0')
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*cp++ = '\0';
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if (strcasecmp(data, "IN") == 0)
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ctx->classes[n++] = C_IN;
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else if (strcasecmp(data, "HS") == 0)
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ctx->classes[n++] = C_HS;
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data = cp;
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}
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if (n == 0) {
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/* Restore the default. Better than
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nother at all. */
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ctx->classes[0] = C_IN;
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ctx->classes[1] = C_HS;
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} else if (n == 1
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|| ctx->classes[0] == ctx->classes[1])
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ctx->classes[1] = 0;
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}
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}
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fclose(fp);
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return (0);
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@@ -464,12 +487,6 @@ __hesiod_res_set(void *context, struct __res_state *res,
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if (ctx->res && ctx->free_res) {
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res_nclose(ctx->res);
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if ((ctx->res->options & RES_INIT) && ctx->res->nscount > 0) {
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for (int ns = 0; ns < MAXNS; ns++) {
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free (ctx->res->_u._ext.nsaddrs[ns]);
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ctx->res->_u._ext.nsaddrs[ns] = NULL;
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}
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}
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(*ctx->free_res)(ctx->res);
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}
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