pjproject_bundled: Retry download if previously saved tarball is bad

If a tarball is corrupted during download, the makefile will attempt to
download it again. If the tarball somehow gets corrupted after it's
downloaded however, the makefile was just failing.  We now
retry the download.

ASTERISK-26653 #close

Change-Id: I1b24d454852d80186f60c5a65dc4624ea8a1c359

third-party/pjproject/Makefile

@@ -87,29 +87,37 @@ SHELL_ECHO_PREFIX := echo '[pjproject] '
 
 _all: $(TARGETS)
 
+define verify_tarball
+	($(SHELL_ECHO_PREFIX) Verifying $(TARBALL) &&\
+	tarball_sum=$$($(CAT) $(TARBALL) | $(MD5) | $(SED) -n -r -e "s/^([^ ]+)\s+.*/\1/gp") ;\
+	required_sum=$$($(SED) -n -r -e "s/^([^ ]+)\s+$(TARBALL_FILE)/\1/gp" $(PJMD5SUM)) ;\
+	if [ "$$tarball_sum" != "$$required_sum" ] ; then $(SHELL_ECHO_PREFIX) Verify failed ; exit 1 ;\
+	else $(SHELL_ECHO_PREFIX) Verify successful ; exit 0 ; fi; )
+endef
+
 define download_from_pjproject
-	($(SHELL_ECHO_PREFIX) Downloading $(PJPROJECT_URL)/$(@F) to $@ ;\
-	$(DOWNLOAD_TO_STDOUT) $(call DOWNLOAD_TIMEOUT,5,10) $(PJPROJECT_URL)/$(@F) > $@ &&\
+	($(SHELL_ECHO_PREFIX) Downloading $(TARBALL_URL) to $(TARBALL) ;\
+	$(DOWNLOAD_TO_STDOUT) $(call DOWNLOAD_TIMEOUT,5,10) $(TARBALL_URL) > $(TARBALL) &&\
 	$(SHELL_ECHO_PREFIX) Downloading $(PJPROJECT_URL)/MD5SUM to $(PJMD5SUM) &&\
 	$(DOWNLOAD_TO_STDOUT) $(call DOWNLOAD_TIMEOUT,5,10) $(PJPROJECT_URL)/MD5SUM.TXT > $(PJMD5SUM) &&\
-	($(SHELL_ECHO_PREFIX) Verifying $@ &&\
-	tarball_sum=$$($(CAT) $@ | $(MD5) | $(SED) -n -r -e "s/^([^ ]+)\s+.*/\1/gp") ;\
-	required_sum=$$($(SED) -n -r -e "s/^([^ ]+)\s+$(@F)/\1/gp" $(PJMD5SUM)) ;\
-	if [ "$$tarball_sum" != "$$required_sum" ] ; then $(SHELL_ECHO_PREFIX) Verify failed ; exit 1 ; fi) &&\
-	$(SHELL_ECHO_PREFIX) Verify successful ; exit 0)
+	$(verify_tarball))
 endef
 
 .DELETE_ON_ERROR:
 
 DOWNLOAD_DIR := $(or $(EXTERNALS_CACHE_DIR),$(TMPDIR),$(wildcard /tmp),.)
-TARBALL = $(DOWNLOAD_DIR)/pjproject-$(PJPROJECT_VERSION).tar.bz2
+TARBALL_FILE = pjproject-$(PJPROJECT_VERSION).tar.bz2
+TARBALL = $(DOWNLOAD_DIR)/$(TARBALL_FILE)
+TARBALL_URL = $(PJPROJECT_URL)/$(TARBALL_FILE)
 PJMD5SUM = $(patsubst %.tar.bz2,%.md5,$(TARBALL))
 
 $(TARBALL): ../versions.mak
 	$(CMD_PREFIX) $(download_from_pjproject) || (rm -rf $@ ;\
-	$(SHELL_ECHO_PREFIX) Retrying download ; sleep 3 ; $(download_from_pjproject))
+	$(SHELL_ECHO_PREFIX) Retrying download ; $(download_from_pjproject))
 
 source/.unpacked: $(DOWNLOAD_DIR)/pjproject-$(PJPROJECT_VERSION).tar.bz2
+	($(verify_tarball)) || (rm -rf $@ ;\
+	$(SHELL_ECHO_PREFIX) Retrying download ; $(download_from_pjproject))
 	$(ECHO_PREFIX) Unpacking $<
 	-@rm -rf source pjproject-* >/dev/null 2>&1
 	$(CMD_PREFIX) $(TAR) -xjf $<