Behave like GNU tar when matching excluded files.

diff --git a/archival/tar.c b/archival/tar.c
index 4971e47..9a3cff3 100644 (file)
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -51,6 +51,7 @@
 #include <sys/types.h>
 #include <sys/sysmacros.h>
 #include <getopt.h>
+#include <fnmatch.h>
 
 #ifdef BB_FEATURE_TAR_GZIP
 extern int unzip(int in, int out);
@@ -251,9 +252,6 @@ extern int tar_main(int argc, char **argv)
                                                excludeList[excludeListSize] = *(++argv);
                                                if (excludeList[excludeListSize] == NULL)
                                                        error_msg_and_die( "Option requires an argument: No file specified\n");
-                                               /* Remove leading "/"s */
-                                               while (*excludeList[excludeListSize] =='/')
-                                                       excludeList[excludeListSize]++;
                                                /* Tack a NULL onto the end of the list */
                                                excludeList[++excludeListSize] = NULL;
                                                stopIt=TRUE;
@@ -274,9 +272,6 @@ extern int tar_main(int argc, char **argv)
                                                if (file[strlen(file)-1] == '\n')
                                                        file[strlen(file)-1] = '\0';
                                                excludeList[excludeListSize] = xstrdup(file);
-                                               /* Remove leading "/"s */
-                                               while (*excludeList[excludeListSize] == '/')
-                                                       excludeList[excludeListSize]++;
                                                /* Tack a NULL onto the end of the list */
                                                excludeList[++excludeListSize] = NULL;
                                        }
@@ -576,6 +571,32 @@ readTarHeader(struct TarHeader *rawHeader, struct TarInfo *header)
        return( FALSE);
 }
 
+int exclude_file(char **excluded_files, const char *file)
+{
+       int i;
+
+       if (excluded_files == NULL)
+               return 0;
+
+       for (i = 0; excluded_files[i] != NULL; i++) {
+               if (excluded_files[i][0] == '/') {
+                       if (fnmatch(excluded_files[i], file,
+                                               FNM_PATHNAME | FNM_LEADING_DIR) == 0)
+                               return 1;
+               } else {
+                       const char *p;
+
+                       for (p = file; p[0] != '\0'; p++) {
+                               if ((p == file || p[-1] == '/') && p[0] != '/' &&
+                                               fnmatch(excluded_files[i], p,
+                                                       FNM_PATHNAME | FNM_LEADING_DIR) == 0)
+                                       return 1;
+                       }
+               }
+       }
+
+       return 0;
+}
 
 /*
  * Read a tar file and extract or list the specified files within it.
@@ -629,32 +650,19 @@ extern int readTarFile(int tarFd, int extractFlag, int listFlag,
                }
 
 #if defined BB_FEATURE_TAR_EXCLUDE
-               {
-                       int skipFlag=FALSE;
-                       /* Check for excluded files....  */
-                       for (tmpList=excludeList; tmpList && *tmpList; tmpList++) {
-                               /* Do some extra hoop jumping for when directory names
-                                * end in '/' but the entry in tmpList doesn't */
-                               if (strncmp( *tmpList, header.name, strlen(*tmpList))==0 || (
-                                                       header.name[strlen(header.name)-1]=='/'
-                                                       && strncmp( *tmpList, header.name, 
-                                                               MIN(strlen(header.name)-1, strlen(*tmpList)))==0)) {
-                                       /* If it is a regular file, pretend to extract it with
-                                        * the extractFlag set to FALSE, so the junk in the tarball
-                                        * is properly skipped over */
-                                       if ( header.type==REGTYPE || header.type==REGTYPE0 ) {
-                                               if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
-                                                       errorFlag = TRUE;
-                                       }
-                                       skipFlag=TRUE;
-                                       break;
-                               }
-                       }
+               if (exclude_file(excludeList, header.name)) {
                        /* There are not the droids you're looking for, move along */
-                       if (skipFlag==TRUE)
-                               continue;
+                       /* If it is a regular file, pretend to extract it with
+                        * the extractFlag set to FALSE, so the junk in the tarball
+                        * is properly skipped over */
+                       if ( header.type==REGTYPE || header.type==REGTYPE0 ) {
+                               if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
+                                       errorFlag = TRUE;
+                       }
+                       continue;
                }
 #endif
+
                if (extractList != NULL) {
                        int skipFlag = TRUE;
                        for (tmpList = extractList; *tmpList != NULL; tmpList++) {
@@ -1036,9 +1044,6 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf, void*
 {
        struct TarBallInfo *tbInfo = (struct TarBallInfo *)userData;
        const char *header_name;
-#if defined BB_FEATURE_TAR_EXCLUDE
-       char** tmpList;
-#endif
 
        /*
        ** Check to see if we are dealing with a hard link.
@@ -1090,16 +1095,8 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf, void*
                return TRUE;
 
 #if defined BB_FEATURE_TAR_EXCLUDE
-       /* Check for excluded files....  */
-       for (tmpList=tbInfo->excludeList; tmpList && *tmpList; tmpList++) {
-               /* Do some extra hoop jumping for when directory names
-                * end in '/' but the entry in tmpList doesn't */
-               if (strncmp( *tmpList, header_name, strlen(*tmpList))==0 || (
-                                       fileName[strlen(fileName)-1]=='/'
-                                       && strncmp( *tmpList, fileName, 
-                                               MIN(strlen(fileName)-1, strlen(*tmpList)))==0)) {
-                       return SKIP;
-               }
+       if (exclude_file(tbInfo->excludeList, header_name)) {
+               return SKIP;
        }
 #endif
 

diff --git a/tar.c b/tar.c
index 4971e47..9a3cff3 100644 (file)
--- a/tar.c
+++ b/tar.c
@@ -51,6 +51,7 @@
 #include <sys/types.h>
 #include <sys/sysmacros.h>
 #include <getopt.h>
+#include <fnmatch.h>
 
 #ifdef BB_FEATURE_TAR_GZIP
 extern int unzip(int in, int out);
@@ -251,9 +252,6 @@ extern int tar_main(int argc, char **argv)
                                                excludeList[excludeListSize] = *(++argv);
                                                if (excludeList[excludeListSize] == NULL)
                                                        error_msg_and_die( "Option requires an argument: No file specified\n");
-                                               /* Remove leading "/"s */
-                                               while (*excludeList[excludeListSize] =='/')
-                                                       excludeList[excludeListSize]++;
                                                /* Tack a NULL onto the end of the list */
                                                excludeList[++excludeListSize] = NULL;
                                                stopIt=TRUE;
@@ -274,9 +272,6 @@ extern int tar_main(int argc, char **argv)
                                                if (file[strlen(file)-1] == '\n')
                                                        file[strlen(file)-1] = '\0';
                                                excludeList[excludeListSize] = xstrdup(file);
-                                               /* Remove leading "/"s */
-                                               while (*excludeList[excludeListSize] == '/')
-                                                       excludeList[excludeListSize]++;
                                                /* Tack a NULL onto the end of the list */
                                                excludeList[++excludeListSize] = NULL;
                                        }
@@ -576,6 +571,32 @@ readTarHeader(struct TarHeader *rawHeader, struct TarInfo *header)
        return( FALSE);
 }
 
+int exclude_file(char **excluded_files, const char *file)
+{
+       int i;
+
+       if (excluded_files == NULL)
+               return 0;
+
+       for (i = 0; excluded_files[i] != NULL; i++) {
+               if (excluded_files[i][0] == '/') {
+                       if (fnmatch(excluded_files[i], file,
+                                               FNM_PATHNAME | FNM_LEADING_DIR) == 0)
+                               return 1;
+               } else {
+                       const char *p;
+
+                       for (p = file; p[0] != '\0'; p++) {
+                               if ((p == file || p[-1] == '/') && p[0] != '/' &&
+                                               fnmatch(excluded_files[i], p,
+                                                       FNM_PATHNAME | FNM_LEADING_DIR) == 0)
+                                       return 1;
+                       }
+               }
+       }
+
+       return 0;
+}
 
 /*
  * Read a tar file and extract or list the specified files within it.
@@ -629,32 +650,19 @@ extern int readTarFile(int tarFd, int extractFlag, int listFlag,
                }
 
 #if defined BB_FEATURE_TAR_EXCLUDE
-               {
-                       int skipFlag=FALSE;
-                       /* Check for excluded files....  */
-                       for (tmpList=excludeList; tmpList && *tmpList; tmpList++) {
-                               /* Do some extra hoop jumping for when directory names
-                                * end in '/' but the entry in tmpList doesn't */
-                               if (strncmp( *tmpList, header.name, strlen(*tmpList))==0 || (
-                                                       header.name[strlen(header.name)-1]=='/'
-                                                       && strncmp( *tmpList, header.name, 
-                                                               MIN(strlen(header.name)-1, strlen(*tmpList)))==0)) {
-                                       /* If it is a regular file, pretend to extract it with
-                                        * the extractFlag set to FALSE, so the junk in the tarball
-                                        * is properly skipped over */
-                                       if ( header.type==REGTYPE || header.type==REGTYPE0 ) {
-                                               if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
-                                                       errorFlag = TRUE;
-                                       }
-                                       skipFlag=TRUE;
-                                       break;
-                               }
-                       }
+               if (exclude_file(excludeList, header.name)) {
                        /* There are not the droids you're looking for, move along */
-                       if (skipFlag==TRUE)
-                               continue;
+                       /* If it is a regular file, pretend to extract it with
+                        * the extractFlag set to FALSE, so the junk in the tarball
+                        * is properly skipped over */
+                       if ( header.type==REGTYPE || header.type==REGTYPE0 ) {
+                               if (tarExtractRegularFile(&header, FALSE, FALSE) == FALSE)
+                                       errorFlag = TRUE;
+                       }
+                       continue;
                }
 #endif
+
                if (extractList != NULL) {
                        int skipFlag = TRUE;
                        for (tmpList = extractList; *tmpList != NULL; tmpList++) {
@@ -1036,9 +1044,6 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf, void*
 {
        struct TarBallInfo *tbInfo = (struct TarBallInfo *)userData;
        const char *header_name;
-#if defined BB_FEATURE_TAR_EXCLUDE
-       char** tmpList;
-#endif
 
        /*
        ** Check to see if we are dealing with a hard link.
@@ -1090,16 +1095,8 @@ static int writeFileToTarball(const char *fileName, struct stat *statbuf, void*
                return TRUE;
 
 #if defined BB_FEATURE_TAR_EXCLUDE
-       /* Check for excluded files....  */
-       for (tmpList=tbInfo->excludeList; tmpList && *tmpList; tmpList++) {
-               /* Do some extra hoop jumping for when directory names
-                * end in '/' but the entry in tmpList doesn't */
-               if (strncmp( *tmpList, header_name, strlen(*tmpList))==0 || (
-                                       fileName[strlen(fileName)-1]=='/'
-                                       && strncmp( *tmpList, fileName, 
-                                               MIN(strlen(fileName)-1, strlen(*tmpList)))==0)) {
-                       return SKIP;
-               }
+       if (exclude_file(tbInfo->excludeList, header_name)) {
+               return SKIP;
        }
 #endif