Adam Majer
55c98f5666
as they use it for other things. So make nodejs-common quiet unless we have a fatal error. OBS-URL: https://build.opensuse.org/package/show/devel:languages:nodejs/nodejs-common?expand=0&rev=48
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#ifdef HAVE_LIBALTERNATIVES_H
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#include <libalternatives.h>
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#endif
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const unsigned min_version = 4;
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const unsigned max_version = 42;
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const char *default_version = "-default";
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const char * const supported_execs[] = {
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"node",
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"npm",
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"npx",
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NULL
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};
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static void __attribute__((noreturn)) printInvalidVersion(const char *version) {
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fprintf(stderr, "Invalid node version: %s\n", version);
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exit(-2);
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}
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int main(int argc, char *argv[])
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{
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if (argc < 1) {
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fprintf(stderr, "Invalid parameters ... no basename?\n");
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return 128;
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}
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/* Verify we are called with supported name */
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const char *program_name = basename(argv[0]);
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const char * const * bn = supported_execs;
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for (; *bn!=NULL; bn++) {
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if (strcmp(*bn, program_name) == 0)
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break;
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}
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if (*bn == NULL) {
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fprintf(stderr, "Invalid program called: '%s'\n", program_name);
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return 129;
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}
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/* Verify we have one of probably supported versions */
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const char *version = getenv("NODE_VERSION");
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char *endptr = 0;
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if (version == NULL || strcmp(version, default_version) == 0)
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version = default_version;
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unsigned long node_ver = strtoul(version, &endptr, 10);
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if (*endptr == '\0' &&
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( node_ver < min_version || node_ver > max_version))
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{
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printInvalidVersion(version);
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}
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else if (*endptr != '\0' && version != default_version)
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{
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printInvalidVersion(version);
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}
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#ifdef HAVE_LIBALTERNATIVES_H
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// if we want default version and not using update-alternatives
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if (version == default_version)
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{
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// should not return, and if it does, it probably means
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// we should fall back to using node-default fallback.
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libalts_exec_default(argv);
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// some programs parse stderr, so let's be quiet here.
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//fputs("Falling back to using -default symlink.\n", stderr);
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}
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#endif
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/* Generate our program path and check that we can execute it */
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char *program_path, *program;
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if (asprintf(&program, "%s%s", *bn, version) == -1 ||
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asprintf(&program_path, "/usr/bin/%s", program) == -1) {
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fputs("Memory allocation error... terminating\n", stderr);
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return 130;
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}
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if (access(program_path, X_OK) != 0) {
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perror(program_path);
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return -1;
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}
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argv[0] = program;
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execv(program_path, argv);
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perror("execv failed");
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return -1;
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}
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