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dirl/dirl.c

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Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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/* See LICENSE file for copyright and license details. */
#include <dirent.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/sendfile.h>
#include <sys/stat.h>
#include <unistd.h>
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#include "config.h"
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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#include "dirl.h"
#include "http.h"
#include "util.h"
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static char*
suffix(int t)
{
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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switch (t) {
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case DT_FIFO:
return "|";
case DT_DIR:
return "/";
case DT_LNK:
return "@";
case DT_SOCK:
return "=";
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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}
return "";
}
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static char*
dirl_read_template(char* tpl)
{
/* Try find template in root (note that we are chroot'ed) */
FILE* tpl_fp;
char* tpl_abs;
tpl_abs = calloc(strlen(tpl)+2, sizeof(char));
if(tpl_abs == NULL) {
return NULL;
}
tpl_abs[0] = '/';
strcat(tpl_abs, tpl);
if (!(tpl_fp = fopen(tpl_abs, "r"))) {
free(tpl_abs);
return NULL;
}
free(tpl_abs);
/* Get size of template */
if (fseek(tpl_fp, 0L, SEEK_END) < 0) {
fclose(tpl_fp);
return NULL;
}
long tpl_size;
if ((tpl_size = ftell(tpl_fp)) < 0) {
fclose(tpl_fp);
return NULL;
}
rewind(tpl_fp);
/* Read template into tpl_buf */
char* tpl_buf = (char*)malloc(sizeof(char) * tpl_size);
if (tpl_buf == NULL) {
fclose(tpl_fp);
free(tpl_buf);
return NULL;
}
if (fread(tpl_buf, 1, tpl_size, tpl_fp) < tpl_size) {
if (feof(tpl_fp)) {
warn("Reached end of template %s prematurely", tpl);
} else if (ferror(tpl_fp)) {
warn("Error while reading template %s", tpl);
}
fclose(tpl_fp);
free(tpl_buf);
clearerr(tpl_fp);
return NULL;
}
return tpl_buf;
}
static enum status
dirl_header_default(int fd, const struct response* res)
{
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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char esc[PATH_MAX];
html_escape(res->uri, esc, sizeof(esc));
if (dprintf(fd,
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"<!DOCTYPE html>\n"
"<html>\n"
" <head>\n"
" <link rel=\"stylesheet\" href=\"/"DIRL_STYLE"\">\n"
" <title>Index of %s</title>\n"
" </head>\n"
" <body>\n"
" <h1>Index of %s</h1>\n"
" <a href=\"..\">..</a>",
esc,
esc) < 0) {
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return S_REQUEST_TIMEOUT;
}
return 0;
}
enum status
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dirl_header(int fd, const struct response* res)
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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{
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char* tpl = dirl_read_template(DIRL_HEADER);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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if(tpl == NULL) {
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return dirl_header_default(fd, res);
}
/* Replace placeholder */
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char* nhead = replace(tpl, "{idx}", "something");
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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/* Write header */
write(fd, nhead, strlen(nhead));
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free(tpl);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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free(nhead);
/* listing header */
return 0;
}
static enum status
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dirl_entry_default(int fd, const struct dirent* entry)
{
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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char esc[PATH_MAX];
html_escape(entry->d_name, esc, sizeof(esc));
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if (dprintf(fd,
"<br />\n\t\t<a href=\"%s%s\">%s%s</a>",
esc,
(entry->d_type == DT_DIR) ? "/" : "",
esc,
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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suffix(entry->d_type)) < 0) {
return S_REQUEST_TIMEOUT;
}
return 0;
}
enum status
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dirl_entry(int fd, const struct dirent* entry)
{
char* tpl = dirl_read_template(DIRL_ENTRY);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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if (tpl == NULL) {
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return dirl_entry_default(fd, entry);
}
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/* Replace placeholder */
char* nentry = replace(tpl, "{entry}", entry->d_name);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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/* Write entry */
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write(fd, nentry, strlen(nentry));
free(tpl);
free(nentry);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return 0;
}
static enum status
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dirl_footer_default(int fd)
{
if (dprintf(fd,
"\n"
" </body>\n"
"</html>") < 0) {
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return S_REQUEST_TIMEOUT;
}
return 0;
}
enum status
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dirl_footer(int fd)
{
char* tpl = dirl_read_template(DIRL_FOOTER);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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if(tpl == NULL) {
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return dirl_footer_default(fd);
}
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/* Replace placeholder */
char* nfoot = replace(tpl, "{idx}", "something");
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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/* Write footer */
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write(fd, nfoot, strlen(nfoot));
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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free(tpl);
free(nfoot);
return 0;
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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}
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int
dirl_skip(const char* name)
{
(void)name; // noop; avoid unused warning
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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return !strcmp(name, DIRL_HEADER) //
|| !strcmp(name, DIRL_ENTRY) //
|| !strcmp(name, DIRL_FOOTER) //
|| !strcmp(name, DIRL_STYLE);
Read dirlist from templates Reads header, footer and entry templates from files defined in config.h. Defaults to original output if not found.
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}
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