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Diffstat (limited to 'lib/liblwres/lwconfig.c')
-rw-r--r--lib/liblwres/lwconfig.c703
1 files changed, 0 insertions, 703 deletions
diff --git a/lib/liblwres/lwconfig.c b/lib/liblwres/lwconfig.c
deleted file mode 100644
index f1c19b697..000000000
--- a/lib/liblwres/lwconfig.c
+++ /dev/null
@@ -1,703 +0,0 @@
-/*
- * Copyright (C) 2000, 2001 Internet Software Consortium.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
- * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
- * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
- * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
- * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
- * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
- * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-/* $Id: lwconfig.c,v 1.1 2004/03/15 20:35:25 as Exp $ */
-
-/***
- *** Module for parsing resolv.conf files.
- ***
- *** entry points are:
- *** lwres_conf_init(lwres_context_t *ctx)
- *** intializes data structure for subsequent config parsing.
- ***
- *** lwres_conf_parse(lwres_context_t *ctx, const char *filename)
- *** parses a file and fills in the data structure.
- ***
- *** lwres_conf_print(lwres_context_t *ctx, FILE *fp)
- *** prints the config data structure to the FILE.
- ***
- *** lwres_conf_clear(lwres_context_t *ctx)
- *** frees up all the internal memory used by the config data
- *** structure, returning it to the lwres_context_t.
- ***
- ***/
-
-#include <config.h>
-
-#include <assert.h>
-#include <ctype.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <lwres/lwbuffer.h>
-#include <lwres/lwres.h>
-#include <lwres/net.h>
-#include <lwres/result.h>
-
-#include "assert_p.h"
-#include "context_p.h"
-
-
-#if ! defined(NS_INADDRSZ)
-#define NS_INADDRSZ 4
-#endif
-
-#if ! defined(NS_IN6ADDRSZ)
-#define NS_IN6ADDRSZ 16
-#endif
-
-static lwres_result_t
-lwres_conf_parsenameserver(lwres_context_t *ctx, FILE *fp);
-
-static lwres_result_t
-lwres_conf_parselwserver(lwres_context_t *ctx, FILE *fp);
-
-static lwres_result_t
-lwres_conf_parsedomain(lwres_context_t *ctx, FILE *fp);
-
-static lwres_result_t
-lwres_conf_parsesearch(lwres_context_t *ctx, FILE *fp);
-
-static lwres_result_t
-lwres_conf_parsesortlist(lwres_context_t *ctx, FILE *fp);
-
-static lwres_result_t
-lwres_conf_parseoption(lwres_context_t *ctx, FILE *fp);
-
-static void
-lwres_resetaddr(lwres_addr_t *addr);
-
-static lwres_result_t
-lwres_create_addr(const char *buff, lwres_addr_t *addr, int convert_zero);
-
-static int lwresaddr2af(int lwresaddrtype);
-
-
-static int
-lwresaddr2af(int lwresaddrtype)
-{
- int af = 0;
-
- switch (lwresaddrtype) {
- case LWRES_ADDRTYPE_V4:
- af = AF_INET;
- break;
-
- case LWRES_ADDRTYPE_V6:
- af = AF_INET6;
- break;
- }
-
- return (af);
-}
-
-
-/*
- * Eat characters from FP until EOL or EOF. Returns EOF or '\n'
- */
-static int
-eatline(FILE *fp) {
- int ch;
-
- ch = fgetc(fp);
- while (ch != '\n' && ch != EOF)
- ch = fgetc(fp);
-
- return (ch);
-}
-
-
-/*
- * Eats white space up to next newline or non-whitespace character (of
- * EOF). Returns the last character read. Comments are considered white
- * space.
- */
-static int
-eatwhite(FILE *fp) {
- int ch;
-
- ch = fgetc(fp);
- while (ch != '\n' && ch != EOF && isspace((unsigned char)ch))
- ch = fgetc(fp);
-
- if (ch == ';' || ch == '#')
- ch = eatline(fp);
-
- return (ch);
-}
-
-
-/*
- * Skip over any leading whitespace and then read in the next sequence of
- * non-whitespace characters. In this context newline is not considered
- * whitespace. Returns EOF on end-of-file, or the character
- * that caused the reading to stop.
- */
-static int
-getword(FILE *fp, char *buffer, size_t size) {
- int ch;
- char *p = buffer;
-
- REQUIRE(buffer != NULL);
- REQUIRE(size > 0);
-
- *p = '\0';
-
- ch = eatwhite(fp);
-
- if (ch == EOF)
- return (EOF);
-
- do {
- *p = '\0';
-
- if (ch == EOF || isspace((unsigned char)ch))
- break;
- else if ((size_t) (p - buffer) == size - 1)
- return (EOF); /* Not enough space. */
-
- *p++ = (char)ch;
- ch = fgetc(fp);
- } while (1);
-
- return (ch);
-}
-
-static void
-lwres_resetaddr(lwres_addr_t *addr) {
- REQUIRE(addr != NULL);
-
- memset(addr->address, 0, LWRES_ADDR_MAXLEN);
- addr->family = 0;
- addr->length = 0;
-}
-
-static char *
-lwres_strdup(lwres_context_t *ctx, const char *str) {
- char *p;
-
- REQUIRE(str != NULL);
- REQUIRE(strlen(str) > 0);
-
- p = CTXMALLOC(strlen(str) + 1);
- if (p != NULL)
- strcpy(p, str);
-
- return (p);
-}
-
-void
-lwres_conf_init(lwres_context_t *ctx) {
- int i;
- lwres_conf_t *confdata;
-
- REQUIRE(ctx != NULL);
- confdata = &ctx->confdata;
-
- confdata->nsnext = 0;
- confdata->lwnext = 0;
- confdata->domainname = NULL;
- confdata->searchnxt = 0;
- confdata->sortlistnxt = 0;
- confdata->resdebug = 0;
- confdata->ndots = 1;
- confdata->no_tld_query = 0;
-
- for (i = 0 ; i < LWRES_CONFMAXNAMESERVERS ; i++)
- lwres_resetaddr(&confdata->nameservers[i]);
-
- for (i = 0 ; i < LWRES_CONFMAXSEARCH ; i++)
- confdata->search[i] = NULL;
-
- for (i = 0 ; i < LWRES_CONFMAXSORTLIST ; i++) {
- lwres_resetaddr(&confdata->sortlist[i].addr);
- lwres_resetaddr(&confdata->sortlist[i].mask);
- }
-}
-
-void
-lwres_conf_clear(lwres_context_t *ctx) {
- int i;
- lwres_conf_t *confdata;
-
- REQUIRE(ctx != NULL);
- confdata = &ctx->confdata;
-
- for (i = 0 ; i < confdata->nsnext ; i++)
- lwres_resetaddr(&confdata->nameservers[i]);
-
- if (confdata->domainname != NULL) {
- CTXFREE(confdata->domainname,
- strlen(confdata->domainname) + 1);
- confdata->domainname = NULL;
- }
-
- for (i = 0 ; i < confdata->searchnxt ; i++) {
- if (confdata->search[i] != NULL) {
- CTXFREE(confdata->search[i],
- strlen(confdata->search[i]) + 1);
- confdata->search[i] = NULL;
- }
- }
-
- for (i = 0 ; i < LWRES_CONFMAXSORTLIST ; i++) {
- lwres_resetaddr(&confdata->sortlist[i].addr);
- lwres_resetaddr(&confdata->sortlist[i].mask);
- }
-
- confdata->nsnext = 0;
- confdata->lwnext = 0;
- confdata->domainname = NULL;
- confdata->searchnxt = 0;
- confdata->sortlistnxt = 0;
- confdata->resdebug = 0;
- confdata->ndots = 1;
- confdata->no_tld_query = 0;
-}
-
-static lwres_result_t
-lwres_conf_parsenameserver(lwres_context_t *ctx, FILE *fp) {
- char word[LWRES_CONFMAXLINELEN];
- int res;
- lwres_conf_t *confdata;
-
- confdata = &ctx->confdata;
-
- if (confdata->nsnext == LWRES_CONFMAXNAMESERVERS)
- return (LWRES_R_SUCCESS);
-
- res = getword(fp, word, sizeof(word));
- if (strlen(word) == 0)
- return (LWRES_R_FAILURE); /* Nothing on line. */
- else if (res == ' ' || res == '\t')
- res = eatwhite(fp);
-
- if (res != EOF && res != '\n')
- return (LWRES_R_FAILURE); /* Extra junk on line. */
-
- res = lwres_create_addr(word,
- &confdata->nameservers[confdata->nsnext++], 1);
- if (res != LWRES_R_SUCCESS)
- return (res);
-
- return (LWRES_R_SUCCESS);
-}
-
-static lwres_result_t
-lwres_conf_parselwserver(lwres_context_t *ctx, FILE *fp) {
- char word[LWRES_CONFMAXLINELEN];
- int res;
- lwres_conf_t *confdata;
-
- confdata = &ctx->confdata;
-
- if (confdata->lwnext == LWRES_CONFMAXLWSERVERS)
- return (LWRES_R_SUCCESS);
-
- res = getword(fp, word, sizeof(word));
- if (strlen(word) == 0)
- return (LWRES_R_FAILURE); /* Nothing on line. */
- else if (res == ' ' || res == '\t')
- res = eatwhite(fp);
-
- if (res != EOF && res != '\n')
- return (LWRES_R_FAILURE); /* Extra junk on line. */
-
- res = lwres_create_addr(word,
- &confdata->lwservers[confdata->lwnext++], 1);
- if (res != LWRES_R_SUCCESS)
- return (res);
-
- return (LWRES_R_SUCCESS);
-}
-
-static lwres_result_t
-lwres_conf_parsedomain(lwres_context_t *ctx, FILE *fp) {
- char word[LWRES_CONFMAXLINELEN];
- int res, i;
- lwres_conf_t *confdata;
-
- confdata = &ctx->confdata;
-
- res = getword(fp, word, sizeof(word));
- if (strlen(word) == 0)
- return (LWRES_R_FAILURE); /* Nothing else on line. */
- else if (res == ' ' || res == '\t')
- res = eatwhite(fp);
-
- if (res != EOF && res != '\n')
- return (LWRES_R_FAILURE); /* Extra junk on line. */
-
- if (confdata->domainname != NULL)
- CTXFREE(confdata->domainname,
- strlen(confdata->domainname) + 1); /* */
-
- /*
- * Search and domain are mutually exclusive.
- */
- for (i = 0 ; i < LWRES_CONFMAXSEARCH ; i++) {
- if (confdata->search[i] != NULL) {
- CTXFREE(confdata->search[i],
- strlen(confdata->search[i])+1);
- confdata->search[i] = NULL;
- }
- }
- confdata->searchnxt = 0;
-
- confdata->domainname = lwres_strdup(ctx, word);
-
- if (confdata->domainname == NULL)
- return (LWRES_R_FAILURE);
-
- return (LWRES_R_SUCCESS);
-}
-
-static lwres_result_t
-lwres_conf_parsesearch(lwres_context_t *ctx, FILE *fp) {
- int idx, delim;
- char word[LWRES_CONFMAXLINELEN];
- lwres_conf_t *confdata;
-
- confdata = &ctx->confdata;
-
- if (confdata->domainname != NULL) {
- /*
- * Search and domain are mutually exclusive.
- */
- CTXFREE(confdata->domainname,
- strlen(confdata->domainname) + 1);
- confdata->domainname = NULL;
- }
-
- /*
- * Remove any previous search definitions.
- */
- for (idx = 0 ; idx < LWRES_CONFMAXSEARCH ; idx++) {
- if (confdata->search[idx] != NULL) {
- CTXFREE(confdata->search[idx],
- strlen(confdata->search[idx])+1);
- confdata->search[idx] = NULL;
- }
- }
- confdata->searchnxt = 0;
-
- delim = getword(fp, word, sizeof(word));
- if (strlen(word) == 0)
- return (LWRES_R_FAILURE); /* Nothing else on line. */
-
- idx = 0;
- while (strlen(word) > 0) {
- if (confdata->searchnxt == LWRES_CONFMAXSEARCH)
- goto ignore; /* Too many domains. */
-
- confdata->search[idx] = lwres_strdup(ctx, word);
- if (confdata->search[idx] == NULL)
- return (LWRES_R_FAILURE);
- idx++;
- confdata->searchnxt++;
-
- ignore:
- if (delim == EOF || delim == '\n')
- break;
- else
- delim = getword(fp, word, sizeof(word));
- }
-
- return (LWRES_R_SUCCESS);
-}
-
-static lwres_result_t
-lwres_create_addr(const char *buffer, lwres_addr_t *addr, int convert_zero) {
- struct in_addr v4;
- struct in6_addr v6;
-
- if (lwres_net_aton(buffer, &v4) == 1) {
- if (convert_zero) {
- unsigned char zeroaddress[] = {0, 0, 0, 0};
- unsigned char loopaddress[] = {127, 0, 0, 1};
- if (memcmp(&v4, zeroaddress, 4) == 0)
- memcpy(&v4, loopaddress, 4);
- }
- addr->family = LWRES_ADDRTYPE_V4;
- addr->length = NS_INADDRSZ;
- memcpy((void *)addr->address, &v4, NS_INADDRSZ);
-
- } else if (lwres_net_pton(AF_INET6, buffer, &v6) == 1) {
- addr->family = LWRES_ADDRTYPE_V6;
- addr->length = NS_IN6ADDRSZ;
- memcpy((void *)addr->address, &v6, NS_IN6ADDRSZ);
- } else {
- return (LWRES_R_FAILURE); /* Unrecognised format. */
- }
-
- return (LWRES_R_SUCCESS);
-}
-
-static lwres_result_t
-lwres_conf_parsesortlist(lwres_context_t *ctx, FILE *fp) {
- int delim, res, idx;
- char word[LWRES_CONFMAXLINELEN];
- char *p;
- lwres_conf_t *confdata;
-
- confdata = &ctx->confdata;
-
- delim = getword(fp, word, sizeof(word));
- if (strlen(word) == 0)
- return (LWRES_R_FAILURE); /* Empty line after keyword. */
-
- while (strlen(word) > 0) {
- if (confdata->sortlistnxt == LWRES_CONFMAXSORTLIST)
- return (LWRES_R_FAILURE); /* Too many values. */
-
- p = strchr(word, '/');
- if (p != NULL)
- *p++ = '\0';
-
- idx = confdata->sortlistnxt;
- res = lwres_create_addr(word, &confdata->sortlist[idx].addr, 1);
- if (res != LWRES_R_SUCCESS)
- return (res);
-
- if (p != NULL) {
- res = lwres_create_addr(p,
- &confdata->sortlist[idx].mask,
- 0);
- if (res != LWRES_R_SUCCESS)
- return (res);
- } else {
- /*
- * Make up a mask.
- */
- confdata->sortlist[idx].mask =
- confdata->sortlist[idx].addr;
-
- memset(&confdata->sortlist[idx].mask.address, 0xff,
- confdata->sortlist[idx].addr.length);
- }
-
- confdata->sortlistnxt++;
-
- if (delim == EOF || delim == '\n')
- break;
- else
- delim = getword(fp, word, sizeof(word));
- }
-
- return (LWRES_R_SUCCESS);
-}
-
-static lwres_result_t
-lwres_conf_parseoption(lwres_context_t *ctx, FILE *fp) {
- int delim;
- long ndots;
- char *p;
- char word[LWRES_CONFMAXLINELEN];
- lwres_conf_t *confdata;
-
- REQUIRE(ctx != NULL);
- confdata = &ctx->confdata;
-
- delim = getword(fp, word, sizeof(word));
- if (strlen(word) == 0)
- return (LWRES_R_FAILURE); /* Empty line after keyword. */
-
- while (strlen(word) > 0) {
- if (strcmp("debug", word) == 0) {
- confdata->resdebug = 1;
- } else if (strcmp("no_tld_query", word) == 0) {
- confdata->no_tld_query = 1;
- } else if (strncmp("ndots:", word, 6) == 0) {
- ndots = strtol(word + 6, &p, 10);
- if (*p != '\0') /* Bad string. */
- return (LWRES_R_FAILURE);
- if (ndots < 0 || ndots > 0xff) /* Out of range. */
- return (LWRES_R_FAILURE);
- confdata->ndots = (lwres_uint8_t)ndots;
- }
-
- if (delim == EOF || delim == '\n')
- break;
- else
- delim = getword(fp, word, sizeof(word));
- }
-
- return (LWRES_R_SUCCESS);
-}
-
-lwres_result_t
-lwres_conf_parse(lwres_context_t *ctx, const char *filename) {
- FILE *fp = NULL;
- char word[256];
- lwres_result_t rval, ret;
- lwres_conf_t *confdata;
- int stopchar;
-
- REQUIRE(ctx != NULL);
- confdata = &ctx->confdata;
-
- REQUIRE(filename != NULL);
- REQUIRE(strlen(filename) > 0);
- REQUIRE(confdata != NULL);
-
- errno = 0;
- if ((fp = fopen(filename, "r")) == NULL)
- return (LWRES_R_FAILURE);
-
- ret = LWRES_R_SUCCESS;
- do {
- stopchar = getword(fp, word, sizeof(word));
- if (stopchar == EOF) {
- rval = LWRES_R_SUCCESS;
- break;
- }
-
- if (strlen(word) == 0)
- rval = LWRES_R_SUCCESS;
- else if (strcmp(word, "nameserver") == 0)
- rval = lwres_conf_parsenameserver(ctx, fp);
- else if (strcmp(word, "lwserver") == 0)
- rval = lwres_conf_parselwserver(ctx, fp);
- else if (strcmp(word, "domain") == 0)
- rval = lwres_conf_parsedomain(ctx, fp);
- else if (strcmp(word, "search") == 0)
- rval = lwres_conf_parsesearch(ctx, fp);
- else if (strcmp(word, "sortlist") == 0)
- rval = lwres_conf_parsesortlist(ctx, fp);
- else if (strcmp(word, "option") == 0)
- rval = lwres_conf_parseoption(ctx, fp);
- else {
- /* unrecognised word. Ignore entire line */
- rval = LWRES_R_SUCCESS;
- stopchar = eatline(fp);
- if (stopchar == EOF) {
- break;
- }
- }
- if (ret == LWRES_R_SUCCESS && rval != LWRES_R_SUCCESS)
- ret = rval;
- } while (1);
-
- fclose(fp);
-
- return (ret);
-}
-
-lwres_result_t
-lwres_conf_print(lwres_context_t *ctx, FILE *fp) {
- int i;
- int af;
- char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
- const char *p;
- lwres_conf_t *confdata;
- lwres_addr_t tmpaddr;
-
- REQUIRE(ctx != NULL);
- confdata = &ctx->confdata;
-
- REQUIRE(confdata->nsnext <= LWRES_CONFMAXNAMESERVERS);
-
- for (i = 0 ; i < confdata->nsnext ; i++) {
- af = lwresaddr2af(confdata->nameservers[i].family);
-
- p = lwres_net_ntop(af, confdata->nameservers[i].address,
- tmp, sizeof(tmp));
- if (p != tmp)
- return (LWRES_R_FAILURE);
-
- fprintf(fp, "nameserver %s\n", tmp);
- }
-
- for (i = 0 ; i < confdata->lwnext ; i++) {
- af = lwresaddr2af(confdata->lwservers[i].family);
-
- p = lwres_net_ntop(af, confdata->lwservers[i].address,
- tmp, sizeof(tmp));
- if (p != tmp)
- return (LWRES_R_FAILURE);
-
- fprintf(fp, "lwserver %s\n", tmp);
- }
-
- if (confdata->domainname != NULL) {
- fprintf(fp, "domain %s\n", confdata->domainname);
- } else if (confdata->searchnxt > 0) {
- REQUIRE(confdata->searchnxt <= LWRES_CONFMAXSEARCH);
-
- fprintf(fp, "search");
- for (i = 0 ; i < confdata->searchnxt ; i++)
- fprintf(fp, " %s", confdata->search[i]);
- fputc('\n', fp);
- }
-
- REQUIRE(confdata->sortlistnxt <= LWRES_CONFMAXSORTLIST);
-
- if (confdata->sortlistnxt > 0) {
- fputs("sortlist", fp);
- for (i = 0 ; i < confdata->sortlistnxt ; i++) {
- af = lwresaddr2af(confdata->sortlist[i].addr.family);
-
- p = lwres_net_ntop(af,
- confdata->sortlist[i].addr.address,
- tmp, sizeof(tmp));
- if (p != tmp)
- return (LWRES_R_FAILURE);
-
- fprintf(fp, " %s", tmp);
-
- tmpaddr = confdata->sortlist[i].mask;
- memset(&tmpaddr.address, 0xff, tmpaddr.length);
-
- if (memcmp(&tmpaddr.address,
- confdata->sortlist[i].mask.address,
- confdata->sortlist[i].mask.length) != 0) {
- af = lwresaddr2af(
- confdata->sortlist[i].mask.family);
- p = lwres_net_ntop
- (af,
- confdata->sortlist[i].mask.address,
- tmp, sizeof(tmp));
- if (p != tmp)
- return (LWRES_R_FAILURE);
-
- fprintf(fp, "/%s", tmp);
- }
- }
- fputc('\n', fp);
- }
-
- if (confdata->resdebug)
- fprintf(fp, "options debug\n");
-
- if (confdata->ndots > 0)
- fprintf(fp, "options ndots:%d\n", confdata->ndots);
-
- if (confdata->no_tld_query)
- fprintf(fp, "options no_tld_query\n");
-
- return (LWRES_R_SUCCESS);
-}
-
-lwres_conf_t *
-lwres_conf_get(lwres_context_t *ctx) {
- REQUIRE(ctx != NULL);
-
- return (&ctx->confdata);
-}
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