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/** |
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* This file is part of the CernVM File System. |
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*/ |
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#include "cmd_util.h" |
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#include <unistd.h> |
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#include <map> |
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#include <set> |
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#include <string> |
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#include <vector> |
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#include "publish/except.h" |
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#include "util/posix.h" |
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int publish::CallServerHook(const std::string &func, |
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const std::string &fqrn, |
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const std::string &path_hooks) |
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{ |
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if (!FileExists(path_hooks)) |
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return 0; |
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int pipe_stdin[2]; |
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MakePipe(pipe_stdin); |
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std::set<int> preserve_fildes; |
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preserve_fildes.insert(0); |
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preserve_fildes.insert(1); |
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preserve_fildes.insert(2); |
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std::map<int, int> map_fildes; |
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map_fildes[pipe_stdin[0]] = 0; // Reading end of pipe_stdin |
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std::vector<std::string> cmd_line; |
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cmd_line.push_back("/bin/sh"); |
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pid_t child_pid; |
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bool rvb = ManagedExec(cmd_line, |
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preserve_fildes, |
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map_fildes, |
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false /* drop_credentials */, |
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false /* clear_env */, |
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false /* double_fork */, |
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&child_pid); |
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if (!rvb) { |
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ClosePipe(pipe_stdin); |
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return -127; |
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} |
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close(pipe_stdin[0]); |
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const std::string callout = |
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func + "() { :; }\n" + |
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". " + path_hooks + "\n" + |
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func + " " + fqrn + "\n"; |
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WritePipe(pipe_stdin[1], callout.data(), callout.length()); |
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close(pipe_stdin[1]); |
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return WaitForChild(child_pid); |
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} |
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