diff options
Diffstat (limited to 'mail-mta/exim/files/exim-4.95-localscan_dlopen.patch')
| -rw-r--r-- | mail-mta/exim/files/exim-4.95-localscan_dlopen.patch | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/mail-mta/exim/files/exim-4.95-localscan_dlopen.patch b/mail-mta/exim/files/exim-4.95-localscan_dlopen.patch new file mode 100644 index 000000000000..320cc9936da9 --- /dev/null +++ b/mail-mta/exim/files/exim-4.95-localscan_dlopen.patch @@ -0,0 +1,221 @@ +Only in exim-4.95: dlopen.patch +diff -aur exim-4.95.orig/src/config.h.defaults exim-4.95/src/config.h.defaults +--- exim-4.95.orig/src/config.h.defaults 2021-09-28 10:24:46.000000000 +0200 ++++ exim-4.95/src/config.h.defaults 2021-09-29 08:20:03.677883649 +0200 +@@ -35,6 +35,8 @@ + + #define AUTH_VARS 4 + ++#define DLOPEN_LOCAL_SCAN ++ + #define BIN_DIRECTORY + + #define CONFIGURE_FILE +Only in exim-4.95/src: config.h.defaults.orig +diff -aur exim-4.95.orig/src/EDITME exim-4.95/src/EDITME +--- exim-4.95.orig/src/EDITME 2021-09-28 10:24:46.000000000 +0200 ++++ exim-4.95/src/EDITME 2021-09-29 08:20:03.678883649 +0200 +@@ -883,6 +883,24 @@ + + + #------------------------------------------------------------------------------ ++# On systems which support dynamic loading of shared libraries, Exim can ++# load a local_scan function specified in its config file instead of having ++# to be recompiled with the desired local_scan function. For a full ++# description of the API to this function, see the Exim specification. ++ ++#DLOPEN_LOCAL_SCAN=yes ++ ++# If you set DLOPEN_LOCAL_SCAN, then you need to include -rdynamic in the ++# linker flags. Without it, the loaded .so won't be able to access any ++# functions from exim. ++ ++LFLAGS = -rdynamic ++ifeq ($(OSTYPE),Linux) ++LFLAGS += -ldl ++endif ++ ++ ++#------------------------------------------------------------------------------ + # The default distribution of Exim contains only the plain text form of the + # documentation. Other forms are available separately. If you want to install + # the documentation in "info" format, first fetch the Texinfo documentation +Only in exim-4.95/src: EDITME.orig +diff -aur exim-4.95.orig/src/globals.c exim-4.95/src/globals.c +--- exim-4.95.orig/src/globals.c 2021-09-28 10:24:46.000000000 +0200 ++++ exim-4.95/src/globals.c 2021-09-29 08:20:03.679883649 +0200 +@@ -42,6 +42,10 @@ + + uschar *no_aliases = NULL; + ++#ifdef DLOPEN_LOCAL_SCAN ++uschar *local_scan_path = NULL; ++#endif ++ + + /* For comments on these variables, see globals.h. I'm too idle to + duplicate them here... */ +Only in exim-4.95/src: globals.c.orig +diff -aur exim-4.95.orig/src/globals.h exim-4.95/src/globals.h +--- exim-4.95.orig/src/globals.h 2021-09-28 10:24:46.000000000 +0200 ++++ exim-4.95/src/globals.h 2021-09-29 08:20:03.680883648 +0200 +@@ -170,6 +170,9 @@ + extern int (*receive_ferror)(void); + extern BOOL (*receive_smtp_buffered)(void); + ++#ifdef DLOPEN_LOCAL_SCAN ++extern uschar *local_scan_path; /* Path to local_scan() library */ ++#endif + + /* For clearing, saving, restoring address expansion variables. We have to have + the size of this vector set explicitly, because it is referenced from more than +Only in exim-4.95/src: globals.h.orig +diff -aur exim-4.95.orig/src/local_scan.c exim-4.95/src/local_scan.c +--- exim-4.95.orig/src/local_scan.c 2021-09-28 10:24:46.000000000 +0200 ++++ exim-4.95/src/local_scan.c 2021-09-29 08:23:33.756785663 +0200 +@@ -54,10 +54,130 @@ + is used in the rejection message. + */ + ++#ifdef DLOPEN_LOCAL_SCAN ++# include <stdlib.h> ++# include <dlfcn.h> ++static int (*local_scan_fn)(int fd, uschar **return_text) = NULL; ++static int load_local_scan_library(void); ++extern uschar *local_scan_path; /* Path to local_scan() library */ ++#endif ++ + int + local_scan(int fd, uschar **return_text) + { +-return LOCAL_SCAN_ACCEPT; ++#ifdef DLOPEN_LOCAL_SCAN ++/* local_scan_path is defined AND not the empty string */ ++if (local_scan_path && *local_scan_path) ++ { ++ if (!local_scan_fn) ++ { ++ if (!load_local_scan_library()) ++ { ++ char *base_msg , *error_msg , *final_msg ; ++ int final_length = -1 ; ++ ++ base_msg=US"Local configuration error - local_scan() library failure\n"; ++ error_msg = dlerror() ; ++ ++ final_length = strlen(base_msg) + strlen(error_msg) + 1 ; ++ final_msg = (char*)malloc( final_length*sizeof(char) ) ; ++ *final_msg = '\0' ; ++ ++ strcat( final_msg , base_msg ) ; ++ strcat( final_msg , error_msg ) ; ++ ++ *return_text = final_msg ; ++ return LOCAL_SCAN_TEMPREJECT; ++ } ++ } ++ return local_scan_fn(fd, return_text); ++ } ++else ++#endif ++ return LOCAL_SCAN_ACCEPT; ++} ++ ++#ifdef DLOPEN_LOCAL_SCAN ++ ++static int load_local_scan_library(void) ++{ ++/* No point in keeping local_scan_lib since we'll never dlclose() anyway */ ++void *local_scan_lib = NULL; ++int (*local_scan_version_fn)(void); ++int vers_maj; ++int vers_min; ++ ++local_scan_lib = dlopen(local_scan_path, RTLD_NOW); ++if (!local_scan_lib) ++ { ++ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() library open failed - " ++ "message temporarily rejected"); ++ return FALSE; ++ } ++ ++local_scan_version_fn = dlsym(local_scan_lib, "local_scan_version_major"); ++if (!local_scan_version_fn) ++ { ++ dlclose(local_scan_lib); ++ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() library doesn't contain " ++ "local_scan_version_major() function - message temporarily rejected"); ++ return FALSE; ++ } ++ ++/* The major number is increased when the ABI is changed in a non ++ backward compatible way. */ ++vers_maj = local_scan_version_fn(); ++ ++local_scan_version_fn = dlsym(local_scan_lib, "local_scan_version_minor"); ++if (!local_scan_version_fn) ++ { ++ dlclose(local_scan_lib); ++ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() library doesn't contain " ++ "local_scan_version_minor() function - message temporarily rejected"); ++ return FALSE; ++ } ++ ++/* The minor number is increased each time a new feature is added (in a ++ way that doesn't break backward compatibility) -- Marc */ ++vers_min = local_scan_version_fn(); ++ ++ ++if (vers_maj != LOCAL_SCAN_ABI_VERSION_MAJOR) ++ { ++ dlclose(local_scan_lib); ++ local_scan_lib = NULL; ++ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() has an incompatible major" ++ "version number, you need to recompile your module for this version" ++ "of exim (The module was compiled for version %d.%d and this exim provides" ++ "ABI version %d.%d)", vers_maj, vers_min, LOCAL_SCAN_ABI_VERSION_MAJOR, ++ LOCAL_SCAN_ABI_VERSION_MINOR); ++ return FALSE; ++ } ++else if (vers_min > LOCAL_SCAN_ABI_VERSION_MINOR) ++ { ++ dlclose(local_scan_lib); ++ local_scan_lib = NULL; ++ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() has an incompatible minor" ++ "version number, you need to recompile your module for this version" ++ "of exim (The module was compiled for version %d.%d and this exim provides" ++ "ABI version %d.%d)", vers_maj, vers_min, LOCAL_SCAN_ABI_VERSION_MAJOR, ++ LOCAL_SCAN_ABI_VERSION_MINOR); ++ return FALSE; ++ } ++ ++local_scan_fn = dlsym(local_scan_lib, "local_scan"); ++if (!local_scan_fn) ++ { ++ dlclose(local_scan_lib); ++ log_write(0, LOG_MAIN|LOG_REJECT, "local_scan() library doesn't contain " ++ "local_scan() function - message temporarily rejected"); ++ return FALSE; ++ } ++ ++return TRUE; + } + ++#endif /* DLOPEN_LOCAL_SCAN */ ++ ++ + /* End of local_scan.c */ +diff -aur exim-4.95.orig/src/readconf.c exim-4.95/src/readconf.c +--- exim-4.95.orig/src/readconf.c 2021-09-28 10:24:46.000000000 +0200 ++++ exim-4.95/src/readconf.c 2021-09-29 08:20:03.682883647 +0200 +@@ -215,6 +215,9 @@ + { "local_from_prefix", opt_stringptr, {&local_from_prefix} }, + { "local_from_suffix", opt_stringptr, {&local_from_suffix} }, + { "local_interfaces", opt_stringptr, {&local_interfaces} }, ++#ifdef DLOPEN_LOCAL_SCAN ++ { "local_scan_path", opt_stringptr, {&local_scan_path} }, ++#endif + #ifdef HAVE_LOCAL_SCAN + { "local_scan_timeout", opt_time, {&local_scan_timeout} }, + #endif +Only in exim-4.95/src: readconf.c.orig |