114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
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#include <sys/types.h>
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#include <string>
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#include <iostream>
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#include <vector>
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#ifndef NOFORK
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#include <pwd.h>
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#include <subprocess.h>
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#include <filesystem>
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#endif
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#include "util.h"
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#ifndef NOFORK
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int gerbolyze::run_cargo_command(const char *cmd_name, std::vector<std::string> &cmdline, const char *envvar) {
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//std::cerr << "Running command: " << cmd_name << " ";
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std::vector<const char *> cmdline_c = {nullptr};
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for (std::string &s : cmdline) {
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//std::cerr << s << " ";
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cmdline_c.push_back(s.c_str());
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}
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cmdline_c.push_back(nullptr);
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//std::cerr << std::endl;
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const char *homedir;
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if ((homedir = getenv("HOME")) == NULL) {
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homedir = getpwuid(getuid())->pw_dir;
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}
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std::string homedir_s(homedir);
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std::string cargo_bin_dir = homedir_s + "/.cargo/bin/" + cmd_name;
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bool found = false;
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int proc_rc = -1;
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for (int i=0; i<3; i++) {
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std::string envvar_cx;
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const char *envvar_val;
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switch (i) {
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case 0:
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if ((envvar_val = getenv(envvar)) == NULL) {
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continue;
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} else {
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if (envvar_val[0] == '~') {
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envvar_cx = homedir_s + std::string(envvar_val+1);
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cmdline_c[0] = envvar_cx.c_str();
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} else {
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cmdline_c[0] = envvar_val;
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}
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}
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break;
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case 1:
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cmdline_c[0] = cmd_name;
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break;
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case 2:
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cmdline_c[0] = cargo_bin_dir.c_str();
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break;
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}
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struct subprocess_s subprocess;
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int rc = subprocess_create(cmdline_c.data(), subprocess_option_inherit_environment, &subprocess);
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if (rc) {
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std::cerr << "Error calling " << cmd_name << std::endl;
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return EXIT_FAILURE;
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}
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proc_rc = -1;
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rc = subprocess_join(&subprocess, &proc_rc);
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if (rc) {
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std::cerr << "Error calling " << cmd_name << std::endl;
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return EXIT_FAILURE;
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}
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rc = subprocess_destroy(&subprocess);
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if (rc) {
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std::cerr << "Error calling " << cmd_name << std::endl;
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return EXIT_FAILURE;
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}
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/* Fail if the command given in the environment variable could not be found. */
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if (i > 0 && proc_rc == 255) {
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continue;
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}
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found = true;
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break;
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}
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if (!found) {
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std::cerr << "Error: Cannot find " << cmd_name << ". Is it installed and in $PATH?" << std::endl;
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return EXIT_FAILURE;
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}
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if (proc_rc) {
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std::cerr << cmd_name << " returned an error code: " << proc_rc << std::endl;
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std::cerr << "Command line:";
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for (auto elem:cmdline) {
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std::cerr << " " << elem;
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}
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std::cerr << std::endl;
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return EXIT_FAILURE;
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}
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return 0;
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}
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#else
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int gerbolyze::run_cargo_command(const char *cmd_name, std::vector<std::string> &cmdline, const char *envvar) {
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(void) cmd_name, (void) cmdline, (void) envvar;
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std::cerr << "Error: Cannot spawn " << cmd_name << " subprocess since binary was built with fork/exec disabled (-DNOFORK=1)" << std::endl;
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return EXIT_FAILURE;
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}
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#endif
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