mirror of https://github.com/pygos/init.git
136 lines
2.5 KiB
C
136 lines
2.5 KiB
C
/* SPDX-License-Identifier: ISC */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "servicecmd.h"
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enum {
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NEED_QUOTES = 0x01,
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NEED_ESCAPE = 0x02,
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};
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static int check_str(const char *str)
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{
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int ret = 0;
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while (*str != '\0') {
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if (isspace(*str))
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ret |= NEED_QUOTES;
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if (!isascii(*str) || !isprint(*str))
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ret |= NEED_ESCAPE | NEED_QUOTES;
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if (*str == '\\' || *str == '"' || *str == '\n')
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ret |= NEED_ESCAPE | NEED_QUOTES;
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++str;
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}
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return ret;
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}
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static void print_str(const char *str)
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{
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int flags = check_str(str);
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if (flags & NEED_QUOTES)
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fputc('"', stdout);
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if (flags & NEED_ESCAPE) {
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while (*str != '\0') {
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switch (*str) {
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case '\a': fputs("\\a", stdout); break;
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case '\b': fputs("\\b", stdout); break;
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case '\f': fputs("\\f", stdout); break;
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case '\r': fputs("\\r", stdout); break;
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case '\t': fputs("\\t", stdout); break;
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case '\n': fputs("\\n", stdout); break;
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case '\\':
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case '"':
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fprintf(stdout, "\\%c", *str);
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break;
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default:
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if (!isascii(*str) || !isprint(*str)) {
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fprintf(stdout, "\\x%02X", *str);
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} else {
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fputc(*str, stdout);
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}
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break;
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}
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++str;
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}
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} else {
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fputs(str, stdout);
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}
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if (flags & NEED_QUOTES)
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fputc('"', stdout);
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}
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static int cmd_dumpscript(int argc, char **argv)
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{
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char *filename, *ptr;
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service_t *svc;
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size_t len;
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exec_t *e;
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int i;
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if (check_arguments(argv[0], argc, 2, 3))
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return EXIT_FAILURE;
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for (len = 1, i = 1; i < argc; ++i)
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len += strlen(argv[i]) + 1;
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filename = alloca(len);
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filename[0] = '\0';
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for (i = 1; i < argc; ++i) {
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if (i > 1)
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strcat(filename, "@");
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strcat(filename, argv[i]);
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}
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svc = loadsvc(SVCDIR, filename);
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if (svc == NULL) {
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fprintf(stderr, "Could not load service '%s'\n", filename);
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return EXIT_FAILURE;
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}
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fprintf(stdout, "#\n# commands executed for serice '%s'\n#\n",
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filename);
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for (e = svc->exec; e != NULL; e = e->next) {
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ptr = e->args;
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for (i = 0; i < e->argc; ++i) {
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if (i)
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fputc(' ', stdout);
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print_str(ptr);
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ptr += strlen(ptr) + 1;
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}
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putchar('\n');
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}
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delsvc(svc);
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return EXIT_SUCCESS;
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}
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static command_t dumpscript = {
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.cmd = "dumpscript",
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.usage = "<name> [arguments]",
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.s_desc = "print commands executed for a service",
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.l_desc = "This parses a service file from " SVCDIR " and "
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"produces a pseudo-shell-script containing the "
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"exact commands after argument expansion that init "
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"runs when starting the service.",
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.run_cmd = cmd_dumpscript,
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};
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REGISTER_COMMAND(dumpscript)
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