mirror of
https://git.tartarus.org/simon/putty.git
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44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
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/*
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* Self-contained function to try to fetch a single string value from
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* the Registry, and return it as a dynamically allocated C string.
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*/
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#include "putty.h"
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char *registry_get_string(HKEY root, const char *path, const char *leaf)
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{
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HKEY key = root;
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bool need_close_key = false;
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char *toret = NULL, *str = NULL;
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if (path) {
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if (RegCreateKey(key, path, &key) != ERROR_SUCCESS)
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goto out;
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need_close_key = true;
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}
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DWORD type, size;
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if (RegQueryValueEx(key, leaf, 0, &type, NULL, &size) != ERROR_SUCCESS)
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goto out;
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if (type != REG_SZ)
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goto out;
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str = snewn(size + 1, char);
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DWORD size_got = size;
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if (RegQueryValueEx(key, leaf, 0, &type, (LPBYTE)str,
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&size_got) != ERROR_SUCCESS)
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goto out;
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if (type != REG_SZ || size_got > size)
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goto out;
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str[size_got] = '\0';
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toret = str;
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str = NULL;
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out:
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if (need_close_key)
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RegCloseKey(key);
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sfree(str);
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return toret;
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}
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