forked from Lainports/opnsense-ports
8cb1a96ede
Taken from: https://github.com/freebsd/freebsd-ports.git Commit id: 5070672073b68be364139bc6b3a89100bd17d331
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
--- src/select.c.orig Thu Dec 16 02:04:56 1999
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+++ src/select.c Sat Aug 21 12:05:31 2004
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@@ -131,6 +131,36 @@
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return 1;
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}
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+/* escapes the name of a file so that the shell groks it in 'single' q.marks.
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+ The resulting pointer has to be free()ed when not longer used. */
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+char *
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+shell_escape(const char *fn)
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+{
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+ size_t len = 0;
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+ const char *inp;
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+ char *retval, *outp;
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+
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+ for(inp = fn; *inp; ++inp)
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+ switch(*inp)
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+ {
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+ case '\'': len += 4; break;
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+ default: len += 1; break;
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+ }
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+
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+ outp = retval = malloc(len + 1);
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+ if(!outp)
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+ return NULL; /* perhaps one should do better error handling here */
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+ for(inp = fn; *inp; ++inp)
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+ switch(*inp)
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+ {
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+ case '\'': *outp++ = '\''; *outp++ = '\\'; *outp++ = '\'', *outp++ = '\''; break;
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+ default: *outp++ = *inp; break;
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+ }
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+ *outp = 0;
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+
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+ return retval;
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+}
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+
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/* What says file about the type of a file (result is malloc'd). NULL
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if could not be run. */
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@@ -144,11 +174,15 @@
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if (IS_EMPTY (job->file_command))
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return NULL;
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+ filename = shell_escape(filename);
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+ if(filename == NULL)
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+ return NULL;
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/* Call file(1) with the correct option */
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- command = ALLOCA (char, (2
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+ command = ALLOCA (char, (4
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+ strlen (job->file_command)
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+ ustrlen (filename)));
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- sprintf (command, "%s %s", job->file_command, (const char *) filename);
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+ sprintf (command, "%s '%s'", job->file_command, (const char *) filename);
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+ free(filename);
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message (msg_tool, (stderr, "Reading pipe: `%s'\n", command));
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file_out = popen (command, "r");
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