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Fix absolute path handling in GetFileName and GetDirectoryPath (#1534) (#1535)

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This commit is contained in:
Gil Barbosa Reis
2021-01-16 06:33:13 -03:00
committed by GitHub
parent eb7820b2b0
commit 1866be0475
1 changed files with 15 additions and 6 deletions
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21
src/core.c
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@@ -2353,7 +2353,7 @@ const char *GetFileName(const char *filePath)
const char *fileName = NULL; const char *fileName = NULL;
if (filePath != NULL) fileName = strprbrk(filePath, "\\/"); if (filePath != NULL) fileName = strprbrk(filePath, "\\/");
if (!fileName || (fileName == filePath)) return filePath; if (!fileName) return filePath;
return fileName + 1; return fileName + 1;
} }
@@ -2399,9 +2399,9 @@ const char *GetDirectoryPath(const char *filePath)
static char dirPath[MAX_FILEPATH_LENGTH]; static char dirPath[MAX_FILEPATH_LENGTH];
memset(dirPath, 0, MAX_FILEPATH_LENGTH); memset(dirPath, 0, MAX_FILEPATH_LENGTH);
// In case provided path does not contains a root drive letter (C:\, D:\), // In case provided path does not contain a root drive letter (C:\, D:\) nor leading path separator (\, /),
// we add the current directory path to dirPath // we add the current directory path to dirPath
if (filePath[1] != ':') if (filePath[1] != ':' && filePath[0] != '\\' && filePath[0] != '/')
{ {
// For security, we set starting path to current directory, // For security, we set starting path to current directory,
// obtained path will be concated to this // obtained path will be concated to this
@@ -2412,9 +2412,18 @@ const char *GetDirectoryPath(const char *filePath)
lastSlash = strprbrk(filePath, "\\/"); lastSlash = strprbrk(filePath, "\\/");
if (lastSlash) if (lastSlash)
{ {
// NOTE: Be careful, strncpy() is not safe, it does not care about '\0' if (lastSlash == filePath)
memcpy(dirPath + ((filePath[1] != ':')? 2 : 0), filePath, strlen(filePath) - (strlen(lastSlash) - 1)); {
dirPath[strlen(filePath) - strlen(lastSlash) + ((filePath[1] != ':')? 2 : 0)] = '\0'; // Add '\0' manually // The last and only slash is the leading one: path is in a root directory
dirPath[0] = filePath[0];
dirPath[1] = '\0';
}
else
{
// NOTE: Be careful, strncpy() is not safe, it does not care about '\0'
memcpy(dirPath + (filePath[1] != ':' && filePath[0] != '\\' && filePath[0] != '/' ? 2 : 0), filePath, strlen(filePath) - (strlen(lastSlash) - 1));
dirPath[strlen(filePath) - strlen(lastSlash) + (filePath[1] != ':' && filePath[0] != '\\' && filePath[0] != '/' ? 2 : 0)] = '\0'; // Add '\0' manually
}
} }
return dirPath; return dirPath;