source: MondoRescue/branches/stable/mindi-busybox/networking/httpd_indexcgi.c @ 1770

Last change on this file since 1770 was 1770, checked in by Bruno Cornec, 13 years ago
  • Better output for mindi-busybox revision
  • Remove dummy file created on NFS - report from Arnaud Tiger <arnaud.tiger_at_hp.com>
  • strace useful for debug
  • fix new versions for pb (2.0.0 for mindi and 1.7.2 for mindi-busybox)
  • fix build process for mindi-busybox + options used in that version (dd for label-partitions-as-necessary)
  • fix typo in label-partitions-as-necessary which doesn't seem to work
  • Update to busybox 1.7.2
  • perl is now required at restore time to support uuid swap partitions (and will be used for many other thigs

in the future for sure)

  • next mindi version will be 2.0.0 due to all the changes made in it (udev may break working distros)
  • small optimization in mindi on keyboard handling (one single find instead of multiple)
  • better interaction for USB device when launching mindi manually
  • attempt to automatically guess block disk size for ramdisk
  • fix typos in bkphw
  • Fix the remaining problem with UUID support for swap partitions
  • Updates mondoarchive man page for USB support
  • Adds preliminary Hardware support to mindi (Proliant SSSTK)
  • Tries to add udev support also for rhel4
  • Fix UUID support which was still broken.
  • Be conservative in test for the start-nfs script
  • Update config file for mindi-busybox for 1.7.2 migration
  • Try to run around a busybox bug (1.2.2 pb on inexistant links)
  • Add build content for mindi-busybox in pb
  • Remove distributions content for mindi-busybox
  • Fix a warning on inexistant raidtab
  • Solve problem on tmpfs in restore init (Problem of inexistant symlink and busybox)
  • Create MONDO_CACHE and use it everywhere + creation at start
  • Really never try to eject a USB device
  • Fix a issue with &> usage (replaced with 1> and 2>)
  • Adds magic file to depllist in order to have file working + ldd which helps for debugging issues
  • tty modes correct to avoid sh error messages
  • Use ext3 normally and not ext2 instead
  • USB device should be corrected after reading (take 1st part)
  • Adds a mount_USB_here function derived from mount_CDROM_here
  • usb detection place before /dev detection in device name at restore time
  • Fix when restoring from USB: media is asked in interactive mode
  • Adds USB support for mondorestore
  • mount_cdrom => mount_media
  • elilo.efi is now searched throughout /boot/efi and not in a fixed place as there is no standard
  • untar-and-softlink => untar (+ interface change)
  • suppress useless softlinks creation/removal in boot process
  • avoids udevd messages on groups
  • Increase # of disks to 99 as in mindi at restore time (should be a conf file parameter)
  • skip existing big file creation
  • seems to work correctly for USB mindi boot
  • Adds group and tty link to udev conf
  • Always load usb-torage (even 2.6) to initiate USB bus discovery
  • Better printing of messages
  • Attempt to fix a bug in supporting OpenSusE 10.3 kernel for initramfs (mindi may now use multiple regex for kernel initrd detection)
  • Links were not correctly done as non relative for modules in mindi
  • exclusion of modules denied now works
  • Also create modules in their ordinary place, so that classical modprobe works + copy modules.dep
  • Fix bugs for DENY_MODS handling
  • Add device /dev/console for udev
  • ide-generic should now really be excluded
  • Fix a bug in major number for tty
  • If udev then adds modprobe/insmod to rootfs
  • tty0 is also cretaed with udev
  • ide-generic put rather in DENY_MODS
  • udevd remove from deplist s handled in mindi directly
  • better default for mindi when using --usb
  • Handles dynamically linked busybox (in case we want to use it soon ;-)
  • Adds fixed devices to create for udev
  • ide-generic should not be part of the initrd when using libata v2
  • support a dynamically linked udev (case on Ubuntu 7.10 and Mandriva 2008.0 so should be quite generic) This will give incitation to move to dyn. linked binaries in the initrd which will help for other tasks (ia6 4)
  • Improvement in udev support (do not use cl options not available in busybox)
  • Udev in mindi
    • auto creation of the right links at boot time with udev-links.conf(from Mandriva 2008.0)
    • rework startup of udev as current makes kernel crash (from Mandriva 2008.0)
    • add support for 64 bits udev
  • Try to render MyInsmod? silent at boot time
  • Adds udev support (mandatory for newest distributions to avoid remapping of devices in a different way as on the original system)
  • We also need vaft format support for USB boot
  • Adds libusual support (Ubuntu 7.10 needs it for USB)
  • Improve Ubuntu/Debian? keyboard detection and support
  • pbinit adapted to new pb (0.8.10). Filtering of docs done in it
  • Suppress some mondo warnings and errors on USB again
  • Tries to fix lack of files in deb mindi package
  • Verify should now work for USB devices
  • More log/mesages improvement for USB support
  • - Supress g_erase_tmpdir_and_scratchdir
  • Improve some log messages for USB support
  • Try to improve install in mindi to avoid issues with isolinux.cfg not installed vene if in the pkg :-(
  • Improve mindi-busybox build
  • In conformity with pb 0.8.9
  • Add support for Ubuntu 7.10 in build process
  • Add USB Key button to Menu UI (CD streamer removed)
  • Attempt to fix error messages on tmp/scratch files at the end by removing those dir at the latest possible.
  • Fix a bug linked to the size of the -E param which could be used (Arnaud Tiger/René? Ribaud).
  • Integrate ~/.pbrc content into mondorescue.pb (required project-builder >= 0.8.7)
  • Put mondorescue in conformity with new pb filtering rules
  • Add USB support at restore time (no test done yet). New start-usb script PB varibale added where useful
  • Unmounting USB device before removal of temporary scratchdir
  • Stil refining USB copy back to mondo (one command was not executed)
  • No need to have the image subdor in the csratchdir when USB.
  • umount the USB partition before attempting to use it
  • Remove useless copy from mindi to mondo at end of USB handling

(risky merge, we are raising the limits of 2 diverging branches. The status of stable is not completely sure as such. Will need lots of tests, but it's not yet done :-()
(merge -r1692:1769 $SVN_M/branches/2.2.5)

  • Property svn:eol-style set to native
File size: 9.6 KB
Line 
1/*
2 * Copyright (c) 2007 Denys Vlasenko <vda.linux@googlemail.com>
3 *
4 * Licensed under GPLv2, see file LICENSE in this tarball for details.
5 */
6
7/*
8 * This program is a CGI application. It outputs directory index page.
9 * Put it into cgi-bin/index.cgi and chmod 0755.
10 */
11
12/* Build a-la
13i486-linux-uclibc-gcc \
14-static -static-libgcc \
15-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 \
16-Wall -Wshadow -Wwrite-strings -Wundef -Wstrict-prototypes -Werror \
17-Wold-style-definition -Wdeclaration-after-statement -Wno-pointer-sign \
18-Wmissing-prototypes -Wmissing-declarations \
19-Os -fno-builtin-strlen -finline-limit=0 -fomit-frame-pointer \
20-ffunction-sections -fdata-sections -fno-guess-branch-probability \
21-funsigned-char \
22-falign-functions=1 -falign-jumps=1 -falign-labels=1 -falign-loops=1 \
23-march=i386 -mpreferred-stack-boundary=2 \
24-Wl,-Map -Wl,link.map -Wl,--warn-common -Wl,--sort-common -Wl,--gc-sections \
25httpd_indexcgi.c -o index.cgi
26*/
27
28/* We don't use printf, as it pulls in >12 kb of code from uclibc (i386). */
29/* Currently malloc machinery is the biggest part of libc we pull in. */
30/* We have only one realloc and one strdup, any idea how to do without? */
31/* Size (i386, approximate):
32 *   text    data     bss     dec     hex filename
33 *  13036      44    3052   16132    3f04 index.cgi
34 *   2576       4    2048    4628    1214 index.cgi.o
35 */
36
37#include <sys/types.h>
38#include <sys/stat.h>
39#include <errno.h>
40#include <stdint.h>
41#include <stdlib.h>
42#include <string.h>
43#include <unistd.h>
44#include <stdio.h>
45#include <dirent.h>
46#include <time.h>
47
48/* Appearance of the table is controlled by style sheet *ONLY*,
49 * formatting code uses <TAG class=CLASS> to apply style
50 * to elements. Edit stylesheet to your liking and recompile. */
51
52#define STYLE_STR \
53"<style>"                                               "\n"\
54"table {"                                               "\n"\
55  "width:100%;"                                         "\n"\
56  "background-color:#fff5ee;"                           "\n"\
57  "border-width:1px;" /* 1px 1px 1px 1px; */            "\n"\
58  "border-spacing:2px;"                                 "\n"\
59  "border-style:solid;" /* solid solid solid solid; */  "\n"\
60  "border-color:black;" /* black black black black; */  "\n"\
61  "border-collapse:collapse;"                           "\n"\
62"}"                                                     "\n"\
63"th {"                                                  "\n"\
64  "border-width:1px;" /* 1px 1px 1px 1px; */            "\n"\
65  "padding:1px;" /* 1px 1px 1px 1px; */                 "\n"\
66  "border-style:solid;" /* solid solid solid solid; */  "\n"\
67  "border-color:black;" /* black black black black; */  "\n"\
68"}"                                                     "\n"\
69"td {"                                                  "\n"\
70             /* top right bottom left */                    \
71  "border-width:0px 1px 0px 1px;"                       "\n"\
72  "padding:1px;" /* 1px 1px 1px 1px; */                 "\n"\
73  "border-style:solid;" /* solid solid solid solid; */  "\n"\
74  "border-color:black;" /* black black black black; */  "\n"\
75  "white-space:nowrap;"                                 "\n"\
76"}"                                                     "\n"\
77"tr.hdr { background-color:#eee5de; }"                  "\n"\
78"tr.o { background-color:#ffffff; }"                    "\n"\
79/* tr.e { ... } - for even rows (currently none) */         \
80"tr.foot { background-color:#eee5de; }"                 "\n"\
81"th.cnt { text-align:left; }"                           "\n"\
82"th.sz { text-align:right; }"                           "\n"\
83"th.dt { text-align:right; }"                           "\n"\
84"td.sz { text-align:right; }"                           "\n"\
85"td.dt { text-align:right; }"                           "\n"\
86"col.nm { width:98%; }"                                 "\n"\
87"col.sz { width:1%; }"                                  "\n"\
88"col.dt { width:1%; }"                                  "\n"\
89"</style>"                                              "\n"\
90
91typedef struct dir_list_t {
92    char  *dl_name;
93    mode_t dl_mode;
94    off_t  dl_size;
95    time_t dl_mtime;
96} dir_list_t;
97
98static int compare_dl(dir_list_t *a, dir_list_t *b)
99{
100    /* ".." is 'less than' any other dir entry */
101    if (strcmp(a->dl_name, "..") == 0) {
102        return -1;
103    }
104    if (strcmp(b->dl_name, "..") == 0) {
105        return 1;
106    }
107    if (S_ISDIR(a->dl_mode) != S_ISDIR(b->dl_mode)) {
108        /* 1 if b is a dir (and thus a is 'after' b, a > b),
109         * else -1 (a < b) */
110        return (S_ISDIR(b->dl_mode) != 0) ? 1 : -1;
111    }
112    return strcmp(a->dl_name, b->dl_name);
113}
114
115static char buffer[2*1024 > sizeof(STYLE_STR) ? 2*1024 : sizeof(STYLE_STR)];
116static char *dst = buffer;
117enum {
118    BUFFER_SIZE = sizeof(buffer),
119    HEADROOM = 64,
120};
121
122/* After this call, you have at least size + HEADROOM bytes available
123 * ahead of dst */
124static void guarantee(int size)
125{
126    if (buffer + (BUFFER_SIZE-HEADROOM) - dst >= size)
127        return;
128    write(1, buffer, dst - buffer);
129    dst = buffer;
130}
131
132/* NB: formatters do not store terminating NUL! */
133
134/* HEADROOM bytes are available after dst after this call */
135static void fmt_str(/*char *dst,*/ const char *src)
136{
137    unsigned len = strlen(src);
138    guarantee(len);
139    memcpy(dst, src, len);
140    dst += len;
141}
142
143/* HEADROOM bytes after dst are available after this call */
144static void fmt_url(/*char *dst,*/ const char *name)
145{
146    while (*name) {
147        unsigned c = *name++;
148        guarantee(3);
149        *dst = c;
150        if ((c - '0') > 9 /* not a digit */
151         && ((c|0x20) - 'a') > 26 /* not A-Z or a-z */
152         && !strchr("._-+@", c)
153        ) {
154            *dst++ = '%';
155            *dst++ = "0123456789ABCDEF"[c >> 4];
156            *dst = "0123456789ABCDEF"[c & 0xf];
157        }
158        dst++;
159    }
160}
161
162/* HEADROOM bytes are available after dst after this call */
163static void fmt_html(/*char *dst,*/ const char *name)
164{
165    while (*name) {
166        char c = *name++;
167        if (c == '<')
168            fmt_str("&lt;");
169        else if (c == '>')
170            fmt_str("&gt;");
171        else if (c == '&') {
172            fmt_str("&amp;");
173        } else {
174            guarantee(1);
175            *dst++ = c;
176            continue;
177        }
178    }
179}
180
181/* HEADROOM bytes are available after dst after this call */
182static void fmt_ull(/*char *dst,*/ unsigned long long n)
183{
184    char buf[sizeof(n)*3 + 2];
185    char *p;
186
187    p = buf + sizeof(buf) - 1;
188    *p = '\0';
189    do {
190        *--p = (n % 10) + '0';
191        n /= 10;
192    } while (n);
193    fmt_str(/*dst,*/ p);
194}
195
196/* Does not call guarantee - eats into headroom instead */
197static void fmt_02u(/*char *dst,*/ unsigned n)
198{
199    /* n %= 100; - not needed, callers don't pass big n */
200    dst[0] = (n / 10) + '0';
201    dst[1] = (n % 10) + '0';
202    dst += 2;
203}
204
205/* Does not call guarantee - eats into headroom instead */
206static void fmt_04u(/*char *dst,*/ unsigned n)
207{
208    /* n %= 10000; - not needed, callers don't pass big n */
209    fmt_02u(n / 100);
210    fmt_02u(n % 100);
211}
212
213int main(void)
214{
215    dir_list_t *dir_list;
216    dir_list_t *cdir;
217    unsigned dir_list_count;
218    unsigned count_dirs;
219    unsigned count_files;
220    unsigned long long size_total;
221    int odd;
222    DIR *dirp;
223    char *QUERY_STRING;
224
225    QUERY_STRING = getenv("QUERY_STRING");
226    if (!QUERY_STRING
227     || QUERY_STRING[0] != '/'
228     || strstr(QUERY_STRING, "/../")
229     || strcmp(strrchr(QUERY_STRING, '/'), "/..") == 0
230    ) {
231        return 1;
232    }
233
234    if (chdir("..")
235     || (QUERY_STRING[1] && chdir(QUERY_STRING + 1))
236    ) {
237        return 1;
238    }
239
240    dirp = opendir(".");
241    if (!dirp)
242        return 1;
243    dir_list = NULL;
244    dir_list_count = 0;
245    while (1) {
246        struct dirent *dp;
247        struct stat sb;
248
249        dp = readdir(dirp);
250        if (!dp)
251            break;
252        if (dp->d_name[0] == '.' && !dp->d_name[1])
253            continue;
254        if (stat(dp->d_name, &sb) != 0)
255            continue;
256        dir_list = realloc(dir_list, (dir_list_count + 1) * sizeof(dir_list[0]));
257        dir_list[dir_list_count].dl_name = strdup(dp->d_name);
258        dir_list[dir_list_count].dl_mode = sb.st_mode;
259        dir_list[dir_list_count].dl_size = sb.st_size;
260        dir_list[dir_list_count].dl_mtime = sb.st_mtime;
261        dir_list_count++;
262    }
263    closedir(dirp);
264
265    qsort(dir_list, dir_list_count, sizeof(dir_list[0]), (void*)compare_dl);
266
267    fmt_str(
268        "" /* Additional headers (currently none) */
269        "\r\n" /* Mandatory empty line after headers */
270        "<html><head><title>Index of ");
271    /* Guard against directories with &, > etc */
272    fmt_html(QUERY_STRING);
273    fmt_str(
274        "</title>\n"
275        STYLE_STR
276        "</head>" "\n"
277        "<body>" "\n"
278        "<h1>Index of ");
279    fmt_html(QUERY_STRING);
280    fmt_str(
281        "</h1>" "\n"
282        "<table>" "\n"
283        "<col class=nm><col class=sz><col class=dt>" "\n"
284        "<tr class=hdr><th class=cnt>Name<th class=sz>Size<th class=dt>Last modified" "\n");
285
286    odd = 0;
287    count_dirs = 0;
288    count_files = 0;
289    size_total = 0;
290    cdir = dir_list;
291    while (dir_list_count--) {
292        struct tm *tm;
293
294        if (S_ISDIR(cdir->dl_mode)) {
295            count_dirs++;
296        } else if (S_ISREG(cdir->dl_mode)) {
297            count_files++;
298            size_total += cdir->dl_size;
299        } else
300            goto next;
301
302        fmt_str("<tr class=");
303        *dst++ = (odd ? 'o' : 'e');
304        fmt_str("><td class=nm><a href='");
305        fmt_url(cdir->dl_name); /* %20 etc */
306        if (S_ISDIR(cdir->dl_mode))
307            *dst++ = '/';
308        fmt_str("'>");
309        fmt_html(cdir->dl_name); /* &lt; etc */
310        if (S_ISDIR(cdir->dl_mode))
311            *dst++ = '/';
312        fmt_str("</a><td class=sz>");
313        if (S_ISREG(cdir->dl_mode))
314            fmt_ull(cdir->dl_size);
315        fmt_str("<td class=dt>");
316        tm = gmtime(&cdir->dl_mtime);
317        fmt_04u(1900 + tm->tm_year); *dst++ = '-';
318        fmt_02u(tm->tm_mon + 1); *dst++ = '-';
319        fmt_02u(tm->tm_mday); *dst++ = ' ';
320        fmt_02u(tm->tm_hour); *dst++ = ':';
321        fmt_02u(tm->tm_min); *dst++ = ':';
322        fmt_02u(tm->tm_sec);
323        *dst++ = '\n';
324
325        odd = 1 - odd;
326 next:
327        cdir++;
328    }
329
330    fmt_str("<tr class=foot><th class=cnt>Files: ");
331    fmt_ull(count_files);
332    /* count_dirs - 1: we don't want to count ".." */
333    fmt_str(", directories: ");
334    fmt_ull(count_dirs - 1);
335    fmt_str("<th class=sz>");
336    fmt_ull(size_total);
337    fmt_str("<th class=dt>\n");
338    /* "</table></body></html>" - why bother? */
339    guarantee(BUFFER_SIZE * 2); /* flush */
340
341    return 0;
342}
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