#include "compat.h"
#include "libconfig.h"
#include "libconfig_private.h"
#include "conf_apache.h"
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif
static int lc_process_conf_apache_file(const char *configfile, const char *pathprefix);
static int lc_process_conf_apache_include(const char *pathname, const char *pathprefix) {
struct stat pathinfo;
struct dirent *dinfo = NULL;
char includepath[LC_LINEBUF_LEN] = {0};
DIR *dh = NULL;
int statret = -1, lcpcafret = -1;
int retval = 0;
statret = stat(pathname, &pathinfo);
if (statret < 0) {
return(-1);
}
if (S_ISDIR(pathinfo.st_mode)) {
dh = opendir(pathname);
if (dh == NULL) {
return(-1);
}
while (1) {
dinfo = readdir(dh);
if (dinfo == NULL) {
break;
}
/* Skip files that begin with a dot ('.') */
if (dinfo->d_name[0] == '.') continue;
snprintf(includepath, sizeof(includepath) - 1, "%s/%s", pathname, dinfo->d_name);
lcpcafret = lc_process_conf_apache_include(includepath, pathprefix);
if (lcpcafret < 0) {
retval = -1;
/* XXX: should we break here (abort further including of files from a directory if one fails ?) */
}
}
closedir(dh);
} else {
lcpcafret = lc_process_conf_apache_file(pathname, pathprefix);
if (lcpcafret < 0) {
retval = -1;
}
}
return(retval);
}
static int lc_process_conf_apache_file(const char *configfile, const char *pathprefix) {
FILE *configfp = NULL;
char linebuf[LC_LINEBUF_LEN] = {0}, *linebuf_ptr = NULL, *tmp_ptr = NULL;
char *lastsection = NULL;
char qualifbuf[LC_LINEBUF_LEN] = {0};
char *cmd = NULL, *value = NULL, *sep = NULL, *cmdend = NULL;
char *fgetsret = NULL;
int lcpvret = -1, lpcafret = -1;
int invalid_section = 0, ignore_section = 0;
int retval = 0;
lc_err_t save_lc_errno = LC_ERR_NONE;
if (pathprefix != NULL) {
/* Copy the prefix, if specified. */
strncpy(qualifbuf, pathprefix, sizeof(qualifbuf) - 1);
}
if (configfile == NULL) {
lc_errno = LC_ERR_INVDATA;
return(-1);
}
configfp = lc_fopen(configfile, "r");
if (configfp == NULL) {
lc_errno = LC_ERR_CANTOPEN;
return(-1);
}
while (1) {
fgetsret = fgets(linebuf, sizeof(linebuf) - 1, configfp);
if (fgetsret == NULL) {
break;
}
if (feof(configfp)) {
break;
}
/* Remove trailing crap (but not spaces). */
linebuf_ptr = &linebuf[strlen(linebuf) - 1];
while (*linebuf_ptr < ' ' && linebuf_ptr >= linebuf) {
*linebuf_ptr = '\0';
linebuf_ptr--;
}
/* Remove leading spaces. */
linebuf_ptr = &linebuf[0];
while (*linebuf_ptr == ' ' || *linebuf_ptr == '\t') {
linebuf_ptr++;
}
/* Handle section header. */
if (linebuf_ptr[0] == '<' && linebuf_ptr[strlen(linebuf_ptr) - 1] == '>') {
/* Remove < and > from around the data. */
linebuf_ptr[strlen(linebuf_ptr) - 1] = '\0';
linebuf_ptr++;
/* Lowercase the command part of the section. */
tmp_ptr = linebuf_ptr;
while (*tmp_ptr != '\0' && *tmp_ptr != ' ') {
*tmp_ptr = tolower(*tmp_ptr);
tmp_ptr++;
}
/* If this is a close section command, handle it */
if (linebuf_ptr[0] == '/') {
linebuf_ptr++;
cmd = linebuf_ptr;
/* Find the last section closed. */
tmp_ptr = strrchr(qualifbuf, '.');
if (tmp_ptr == NULL) {
lastsection = qualifbuf;
tmp_ptr = qualifbuf;
} else {
lastsection = tmp_ptr + 1;
}
if (strcmp(cmd, lastsection) != 0) {
#ifdef DEBUG
fprintf(stderr, "Section closing does not match last opened section.\n");
fprintf(stderr, "Last opened = \"%s\", Closing = \"%s\"\n", lastsection, cmd);
#endif
retval = -1;
lc_errno = LC_ERR_BADFORMAT;
/* For this error, we abort immediately. */
break;
}
lcpvret = lc_process_var(qualifbuf, NULL, NULL, LC_FLAGS_SECTIONEND);
if (lcpvret < 0) {
#ifdef DEBUG
fprintf(stderr, "Invalid section terminating: \"%s\"\n", qualifbuf);
#endif
}
/* Remove the "lastsection" part.. */
*tmp_ptr = '\0';
/* We just sucessfully closed the last section opened,
we must be in a valid section now since we only open
sections from within valid sections. */
invalid_section = 0;
ignore_section = 0;
continue;
}
/* Otherwise, open a new section. */
/* Don't open a section from an invalid section. */
if (invalid_section == 1 || ignore_section == 1) {
continue;
}
/* Parse out any argument passed. */
sep = strpbrk(linebuf_ptr, " \t");
if (sep != NULL) {
cmdend = sep;
/* Delete space at the end of the command. */
cmdend--; /* It currently derefs to the seperator.. */
while (*cmdend <= ' ') {
*cmdend = '\0';
cmdend--;
}
/* Delete the seperator char and any leading space. */
*sep = '\0';
sep++;
while (*sep == ' ' || *sep == '\t') {
sep++;
}
value = sep;
} else {
/* XXX: should this be "" or NULL ? */
value = "";
}
cmd = linebuf_ptr;
if (qualifbuf[0] != '\0') {
strncat(qualifbuf, ".", sizeof(qualifbuf) - strlen(qualifbuf) - 1);
}
strncat(qualifbuf, cmd, sizeof(qualifbuf) - strlen(qualifbuf) - 1);
lcpvret = lc_process_var(qualifbuf, value, NULL, LC_FLAGS_SECTIONSTART);
if (lcpvret < 0) {
#ifdef DEBUG
fprintf(stderr, "Invalid section: \"%s\"\n", qualifbuf);
#endif
invalid_section = 1;
lc_errno = LC_ERR_INVSECTION;
retval = -1;
}
if (lcpvret == LC_CBRET_IGNORESECTION) {
ignore_section = 1;
}
continue;
}
/* Drop comments and blank lines. */
if (*linebuf_ptr == '#' || *linebuf_ptr == '\0') {
continue;
}
/* Don't handle things for a section that doesn't exist. */
if (invalid_section == 1) {
#ifdef DEBUG
fprintf(stderr, "Ignoring line (because invalid section): %s\n", linebuf);
#endif
continue;
}
if (ignore_section == 1) {
#ifdef DEBUG
fprintf(stderr, "Ignoring line (because ignored section): %s\n", linebuf);
#endif
continue;
}
/* Find the command and the data in the line. */
sep = strpbrk(linebuf_ptr, " \t");
if (sep != NULL) {
cmdend = sep;
/* Delete space at the end of the command. */
cmdend--; /* It currently derefs to the seperator.. */
while (*cmdend <= ' ') {
*cmdend = '\0';
cmdend--;
}
/* Delete the seperator char and any leading space. */
*sep = '\0';
sep++;
while (*sep == ' ' || *sep == '\t') {
sep++;
}
value = sep;
} else {
value = NULL;
}
cmd = linebuf_ptr;
/* Handle special commands. */
if (strcasecmp(cmd, "include") == 0) {
if (value == NULL) {
lc_errno = LC_ERR_BADFORMAT;
retval = -1;
#ifdef DEBUG
fprintf(stderr, "Invalid include command.\n");
#endif
continue;
}
lpcafret = lc_process_conf_apache_include(value, qualifbuf);
if (lpcafret < 0) {
#ifdef DEBUG
fprintf(stderr, "Error in included file.\n");
#endif
retval = -1;
}
continue;
}
/* Create the fully qualified variable name. */
if (qualifbuf[0] != '\0') {
strncat(qualifbuf, ".", sizeof(qualifbuf) - strlen(qualifbuf) - 1);
}
strncat(qualifbuf, cmd, sizeof(qualifbuf) - strlen(qualifbuf) - 1);
/* Call the parent and tell them we have data. */
save_lc_errno = lc_errno;
lc_errno = LC_ERR_NONE;
lcpvret = lc_process_var(qualifbuf, NULL, value, LC_FLAGS_VAR);
if (lcpvret < 0) {
if (lc_errno == LC_ERR_NONE) {
#ifdef DEBUG
fprintf(stderr, "Invalid command: \"%s\"\n", cmd);
#endif
lc_errno = LC_ERR_INVCMD;
} else {
#ifdef DEBUG
fprintf(stderr, "Error processing command (command was valid, but an error occured, errno was set)\n");
#endif
}
retval = -1;
} else {
lc_errno = save_lc_errno;
}
/* Remove the "cmd" part of the buffer. */
tmp_ptr = strrchr(qualifbuf, '.');
if (tmp_ptr == NULL) {
tmp_ptr = qualifbuf;
}
*tmp_ptr = '\0';
}
fclose(configfp);
return(retval);
}
int lc_process_conf_apache(const char *appname, const char *configfile) {
return(lc_process_conf_apache_file(configfile, NULL));
}
Documentation