#include <config.h>
-#define _GNU_SOURCE // for strchrnul
-
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <signal.h>
#include <assert.h>
-#include <ctype.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <guestfs.h>
#include "fish.h"
+#include "c-ctype.h"
#include "closeout.h"
#include "progname.h"
if (guestfs_is_config (g)) {
if (guestfs_launch (g) == -1)
return -1;
- if (guestfs_wait_ready (g) == -1)
- return -1;
}
return 0;
}
switch (c) {
case 0: /* options which are long only */
- if (strcmp (long_options[option_index].name, "listen") == 0)
+ if (STREQ (long_options[option_index].name, "listen"))
remote_control_listen = 1;
- else if (strcmp (long_options[option_index].name, "remote") == 0) {
+ else if (STREQ (long_options[option_index].name, "remote")) {
if (optarg) {
if (sscanf (optarg, "%d", &remote_control) != 1) {
fprintf (stderr, _("%s: --listen=PID: PID was not a number: %s\n"),
exit (1);
}
}
- } else if (strcmp (long_options[option_index].name, "selinux") == 0) {
+ } else if (STREQ (long_options[option_index].name, "selinux")) {
guestfs_set_selinux (g, 1);
} else {
fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
/* Skip any initial whitespace before the command. */
again:
- while (*buf && isspace (*buf))
+ while (*buf && c_isspace (*buf))
buf++;
if (!*buf) continue;
if (optind >= argc) return;
cmd = argv[optind++];
- if (strcmp (cmd, ":") == 0) {
+ if (STREQ (cmd, ":")) {
fprintf (stderr, _("%s: empty command on command line\n"), program_name);
exit (1);
}
params = &argv[optind];
/* Search for end of command list or ":" ... */
- while (optind < argc && strcmp (argv[optind], ":") != 0)
+ while (optind < argc && STRNEQ (argv[optind], ":"))
optind++;
if (optind == argc) {
r = rc_remote (remote_control, cmd, argc, argv, exit_on_error);
/* Otherwise execute it locally. */
- else if (strcasecmp (cmd, "help") == 0) {
+ else if (STRCASEEQ (cmd, "help")) {
if (argc == 0)
list_commands ();
else
display_command (argv[0]);
r = 0;
}
- else if (strcasecmp (cmd, "quit") == 0 ||
- strcasecmp (cmd, "exit") == 0 ||
- strcasecmp (cmd, "q") == 0) {
+ else if (STRCASEEQ (cmd, "quit") ||
+ STRCASEEQ (cmd, "exit") ||
+ STRCASEEQ (cmd, "q")) {
quit = 1;
r = 0;
}
- else if (strcasecmp (cmd, "alloc") == 0 ||
- strcasecmp (cmd, "allocate") == 0)
+ else if (STRCASEEQ (cmd, "alloc") ||
+ STRCASEEQ (cmd, "allocate"))
r = do_alloc (cmd, argc, argv);
- else if (strcasecmp (cmd, "echo") == 0)
+ else if (STRCASEEQ (cmd, "echo"))
r = do_echo (cmd, argc, argv);
- else if (strcasecmp (cmd, "edit") == 0 ||
- strcasecmp (cmd, "vi") == 0 ||
- strcasecmp (cmd, "emacs") == 0)
+ else if (STRCASEEQ (cmd, "edit") ||
+ STRCASEEQ (cmd, "vi") ||
+ STRCASEEQ (cmd, "emacs"))
r = do_edit (cmd, argc, argv);
- else if (strcasecmp (cmd, "lcd") == 0)
+ else if (STRCASEEQ (cmd, "lcd"))
r = do_lcd (cmd, argc, argv);
- else if (strcasecmp (cmd, "glob") == 0)
+ else if (STRCASEEQ (cmd, "glob"))
r = do_glob (cmd, argc, argv);
- else if (strcasecmp (cmd, "more") == 0 ||
- strcasecmp (cmd, "less") == 0)
+ else if (STRCASEEQ (cmd, "more") ||
+ STRCASEEQ (cmd, "less"))
r = do_more (cmd, argc, argv);
- else if (strcasecmp (cmd, "reopen") == 0)
+ else if (STRCASEEQ (cmd, "reopen"))
r = do_reopen (cmd, argc, argv);
- else if (strcasecmp (cmd, "time") == 0)
+ else if (STRCASEEQ (cmd, "sparse"))
+ r = do_sparse (cmd, argc, argv);
+ else if (STRCASEEQ (cmd, "time"))
r = do_time (cmd, argc, argv);
else
r = run_action (cmd, argc, argv);
printf ("%-20s %s\n",
"reopen", _("close and reopen libguestfs handle"));
printf ("%-20s %s\n",
+ "sparse", _("allocate a sparse image file"));
+ printf ("%-20s %s\n",
"time", _("measure time taken to run command"));
/* actions are printed after this (see list_commands) */
{
/* help for actions is auto-generated, see display_command */
- if (strcasecmp (cmd, "alloc") == 0 ||
- strcasecmp (cmd, "allocate") == 0)
+ if (STRCASEEQ (cmd, "alloc") ||
+ STRCASEEQ (cmd, "allocate"))
printf (_("alloc - allocate an image\n"
" alloc <filename> <size>\n"
"\n"
" <nn>K or <nn>KB number of kilobytes\n"
" <nn>M or <nn>MB number of megabytes\n"
" <nn>G or <nn>GB number of gigabytes\n"
+ " <nn>T or <nn>TB number of terabytes\n"
+ " <nn>P or <nn>PB number of petabytes\n"
+ " <nn>E or <nn>EB number of exabytes\n"
" <nn>sects number of 512 byte sectors\n"));
- else if (strcasecmp (cmd, "echo") == 0)
+ else if (STRCASEEQ (cmd, "echo"))
printf (_("echo - display a line of text\n"
" echo [<params> ...]\n"
"\n"
" This echos the parameters to the terminal.\n"));
- else if (strcasecmp (cmd, "edit") == 0 ||
- strcasecmp (cmd, "vi") == 0 ||
- strcasecmp (cmd, "emacs") == 0)
+ else if (STRCASEEQ (cmd, "edit") ||
+ STRCASEEQ (cmd, "vi") ||
+ STRCASEEQ (cmd, "emacs"))
printf (_("edit - edit a file in the image\n"
" edit <filename>\n"
"\n"
"\n"
" NOTE: This will not work reliably for large files\n"
" (> 2 MB) or binary files containing \\0 bytes.\n"));
- else if (strcasecmp (cmd, "lcd") == 0)
+ else if (STRCASEEQ (cmd, "lcd"))
printf (_("lcd - local change directory\n"
" lcd <directory>\n"
"\n"
" Change guestfish's current directory. This command is\n"
" useful if you want to download files to a particular\n"
" place.\n"));
- else if (strcasecmp (cmd, "glob") == 0)
+ else if (STRCASEEQ (cmd, "glob"))
printf (_("glob - expand wildcards in command\n"
" glob <command> [<args> ...]\n"
"\n"
" Glob runs <command> with wildcards expanded in any\n"
" command args. Note that the command is run repeatedly\n"
" once for each expanded argument.\n"));
- else if (strcasecmp (cmd, "help") == 0)
+ else if (STRCASEEQ (cmd, "help"))
printf (_("help - display a list of commands or help on a command\n"
" help cmd\n"
" help\n"));
- else if (strcasecmp (cmd, "more") == 0 ||
- strcasecmp (cmd, "less") == 0)
+ else if (STRCASEEQ (cmd, "more") ||
+ STRCASEEQ (cmd, "less"))
printf (_("more - view a file in the pager\n"
" more <filename>\n"
"\n"
"\n"
" NOTE: This will not work reliably for large files\n"
" (> 2 MB) or binary files containing \\0 bytes.\n"));
- else if (strcasecmp (cmd, "quit") == 0 ||
- strcasecmp (cmd, "exit") == 0 ||
- strcasecmp (cmd, "q") == 0)
+ else if (STRCASEEQ (cmd, "quit") ||
+ STRCASEEQ (cmd, "exit") ||
+ STRCASEEQ (cmd, "q"))
printf (_("quit - quit guestfish\n"
" quit\n"));
- else if (strcasecmp (cmd, "reopen") == 0)
+ else if (STRCASEEQ (cmd, "reopen"))
printf (_("reopen - close and reopen the libguestfs handle\n"
" reopen\n"
"\n"
"Close and reopen the libguestfs handle. It is not necessary to use\n"
"this normally, because the handle is closed properly when guestfish\n"
"exits. However this is occasionally useful for testing.\n"));
- else if (strcasecmp (cmd, "time") == 0)
+ else if (STRCASEEQ (cmd, "sparse"))
+ printf (_("sparse - allocate a sparse image file\n"
+ " sparse <filename> <size>\n"
+ "\n"
+ " This creates an empty sparse file of the given size,\n"
+ " and then adds so it can be further examined.\n"
+ "\n"
+ " In all respects it works the same as the 'alloc'\n"
+ " command, except that the image file is allocated\n"
+ " sparsely, which means that disk blocks are not assigned\n"
+ " to the file until they are needed. Sparse disk files\n"
+ " only use space when written to, but they are slower\n"
+ " and there is a danger you could run out of real disk\n"
+ " space during a write operation.\n"
+ "\n"
+ " For more advanced image creation, see qemu-img utility.\n"
+ "\n"
+ " Size can be specified (where <nn> means a number):\n"
+ " <nn> number of kilobytes\n"
+ " eg: 1440 standard 3.5\" floppy\n"
+ " <nn>K or <nn>KB number of kilobytes\n"
+ " <nn>M or <nn>MB number of megabytes\n"
+ " <nn>G or <nn>GB number of gigabytes\n"
+ " <nn>T or <nn>TB number of terabytes\n"
+ " <nn>P or <nn>PB number of petabytes\n"
+ " <nn>E or <nn>EB number of exabytes\n"
+ " <nn>sects number of 512 byte sectors\n"));
+ else if (STRCASEEQ (cmd, "time"))
printf (_("time - measure time taken to run command\n"
" time <command> [<args> ...]\n"
"\n"
is_true (const char *str)
{
return
- strcasecmp (str, "0") != 0 &&
- strcasecmp (str, "f") != 0 &&
- strcasecmp (str, "false") != 0 &&
- strcasecmp (str, "n") != 0 &&
- strcasecmp (str, "no") != 0;
+ STRCASENEQ (str, "0") &&
+ STRCASENEQ (str, "f") &&
+ STRCASENEQ (str, "false") &&
+ STRCASENEQ (str, "n") &&
+ STRCASENEQ (str, "no");
+}
+
+/* Free strings from a non-NULL terminated char** */
+static void
+free_n_strings (char **str, size_t len)
+{
+ size_t i;
+
+ for (i = 0; i < len; i++) {
+ free (str[i]);
+ }
+ free (str);
}
-/* XXX We could improve list parsing. */
char **
parse_string_list (const char *str)
{
- char **argv;
- const char *p, *pend;
- int argc, i;
+ char **argv = NULL;
+ size_t argv_len = 0;
+
+ /* Current position pointer */
+ const char *p = str;
+
+ /* Token might be simple:
+ * Token
+ * or be quoted:
+ * 'This is a single token'
+ * or contain embedded single-quoted sections:
+ * This' is a sing'l'e to'ken
+ *
+ * The latter may seem over-complicated, but it's what a normal shell does.
+ * Not doing it risks surprising somebody.
+ *
+ * This outer loop is over complete tokens.
+ */
+ while (*p) {
+ char *tok = NULL;
+ size_t tok_len = 0;
- argc = 1;
- for (i = 0; str[i]; ++i)
- if (str[i] == ' ') argc++;
+ /* Skip leading whitespace */
+ p += strspn (p, " \t");
- argv = malloc (sizeof (char *) * (argc+1));
- if (argv == NULL) { perror ("malloc"); exit (1); }
+ char in_quote = 0;
- p = str;
- i = 0;
- while (*p) {
- pend = strchrnul (p, ' ');
- argv[i] = strndup (p, pend-p);
- i++;
- p = *pend == ' ' ? pend+1 : pend;
+ /* This loop is over token 'fragments'. A token can be in multiple bits if
+ * it contains single quotes. We also treat both sides of an escaped quote
+ * as separate fragments because we can't just copy it: we have to remove
+ * the \.
+ */
+ while (*p && (!c_isblank (*p) || in_quote)) {
+ const char *end = p;
+
+ /* Check if the fragment starts with a quote */
+ if ('\'' == *p) {
+ /* Toggle in_quote */
+ in_quote = !in_quote;
+
+ /* Skip the quote */
+ p++; end++;
+ }
+
+ /* If we're in a quote, look for an end quote */
+ if (in_quote) {
+ end += strcspn (end, "'");
+ }
+
+ /* Otherwise, look for whitespace or a quote */
+ else {
+ end += strcspn (end, " \t'");
+ }
+
+ /* Grow the token to accommodate the fragment */
+ size_t tok_end = tok_len;
+ tok_len += end - p;
+ char *tok_new = realloc (tok, tok_len + 1);
+ if (NULL == tok_new) {
+ perror ("realloc");
+ free_n_strings (argv, argv_len);
+ free (tok);
+ exit (1);
+ }
+ tok = tok_new;
+
+ /* Check if we stopped on an escaped quote */
+ if ('\'' == *end && end != p && *(end-1) == '\\') {
+ /* Add everything before \' to the token */
+ memcpy (&tok[tok_end], p, end - p - 1);
+
+ /* Add the quote */
+ tok[tok_len-1] = '\'';
+
+ /* Already processed the quote */
+ p = end + 1;
+ }
+
+ else {
+ /* Add the whole fragment */
+ memcpy (&tok[tok_end], p, end - p);
+
+ p = end;
+ }
+ }
+
+ /* We've reached the end of a token. We shouldn't still be in quotes. */
+ if (in_quote) {
+ fprintf (stderr, _("Runaway quote in string \"%s\"\n"), str);
+
+ free_n_strings (argv, argv_len);
+
+ return NULL;
+ }
+
+ /* Add this token if there is one. There might not be if there was
+ * whitespace at the end of the input string */
+ if (tok) {
+ /* Add the NULL terminator */
+ tok[tok_len] = '\0';
+
+ /* Add the argument to the argument list */
+ argv_len++;
+ char **argv_new = realloc (argv, sizeof (*argv) * argv_len);
+ if (NULL == argv_new) {
+ perror ("realloc");
+ free_n_strings (argv, argv_len-1);
+ free (tok);
+ exit (1);
+ }
+ argv = argv_new;
+
+ argv[argv_len-1] = tok;
+ }
}
- argv[i] = NULL;
+
+ /* NULL terminate the argument list */
+ argv_len++;
+ char **argv_new = realloc (argv, sizeof (*argv) * argv_len);
+ if (NULL == argv_new) {
+ perror ("realloc");
+ free_n_strings (argv, argv_len-1);
+ exit (1);
+ }
+ argv = argv_new;
+
+ argv[argv_len-1] = NULL;
return argv;
}
return 0;
}
+
+/* Resolve the special "win:..." form for Windows-specific paths.
+ * This always returns a newly allocated string which is freed by the
+ * caller function in "cmds.c".
+ */
+char *
+resolve_win_path (const char *path)
+{
+ char *ret;
+ size_t i;
+
+ if (STRCASENEQLEN (path, "win:", 4)) {
+ ret = strdup (path);
+ if (ret == NULL)
+ perror ("strdup");
+ return ret;
+ }
+
+ path += 4;
+
+ /* Drop drive letter, if it's "C:". */
+ if (strncasecmp (path, "c:", 2) == 0)
+ path += 2;
+
+ if (!*path) {
+ ret = strdup ("/");
+ if (ret == NULL)
+ perror ("strdup");
+ return ret;
+ }
+
+ ret = strdup (path);
+ if (ret == NULL) {
+ perror ("strdup");
+ return NULL;
+ }
+
+ /* Blindly convert any backslashes into forward slashes. Is this good? */
+ for (i = 0; i < strlen (ret); ++i)
+ if (ret[i] == '\\')
+ ret[i] = '/';
+
+ char *t = guestfs_case_sensitive_path (g, ret);
+ free (ret);
+ ret = t;
+
+ return ret;
+}
git.annexia.org / libguestfs.git / blobdiff