profile/systemd-osc-context: Enforce length limits

UAPI.15 limits the length of fields; adhere to them.

References:
 [0] https://uapi-group.org/specifications/specs/osc_context/#syntax-in-abnf

diff --git a/profile.d/80-systemd-osc-context.sh b/profile.d/80-systemd-osc-context.sh
index 537facdf1a9483f00549ca95078337a3532ec81c..7d4b9a77f1b3957da16b1bb181faa10d13e88dc0 100644 (file)
--- a/profile.d/80-systemd-osc-context.sh
+++ b/profile.d/80-systemd-osc-context.sh
@@ -33,9 +33,9 @@ __systemd_osc_context_escape() {
 
 __systemd_osc_context_common() {
     if [ -f /etc/machine-id ]; then
-        printf ";machineid=%s" "$(</etc/machine-id)"
+        printf ";machineid=%.36s" "$(</etc/machine-id)"
     fi
-    printf ";user=%s;hostname=%s;bootid=%s;pid=%s" "$USER" "$HOSTNAME" "$(</proc/sys/kernel/random/boot_id)" "$$"
+    printf ";user=%.255s;hostname=%.255s;bootid=%.36s;pid=%.20d" "$USER" "$HOSTNAME" "$(</proc/sys/kernel/random/boot_id)" "$$"
 }
 
 __systemd_osc_context_precmdline() {
@@ -44,11 +44,11 @@ __systemd_osc_context_precmdline() {
     # Close previous command
     if [ -n "${systemd_osc_context_cmd_id:-}" ]; then
         if [ "$systemd_exitstatus" -gt 128 ] && systemd_signal=$(kill -l "$systemd_exitstatus" 2>&-); then
-            printf "\033]3008;end=%s;exit=failure;status=%s;signal=SIG%s\033\\" "$systemd_osc_context_cmd_id" "$systemd_exitstatus" "$systemd_signal"
+            printf "\033]3008;end=%.64s;exit=failure;status=%d;signal=SIG%s\033\\" "$systemd_osc_context_cmd_id" "$systemd_exitstatus" "$systemd_signal"
         elif [ "$systemd_exitstatus" -ne 0 ]; then
-            printf "\033]3008;end=%s;exit=failure;status=%s\033\\" "$systemd_osc_context_cmd_id" $((systemd_exitstatus))
+            printf "\033]3008;end=%.64s;exit=failure;status=%d\033\\" "$systemd_osc_context_cmd_id" $((systemd_exitstatus))
         else
-            printf "\033]3008;end=%s;exit=success\033\\" "$systemd_osc_context_cmd_id"
+            printf "\033]3008;end=%.64s;exit=success\033\\" "$systemd_osc_context_cmd_id"
         fi
     fi
 
@@ -58,7 +58,7 @@ __systemd_osc_context_precmdline() {
     fi
 
     # Create or update the shell session
-    printf "\033]3008;start=%s%s;type=shell;cwd=%s\033\\" "$systemd_osc_context_shell_id" "$(__systemd_osc_context_common)" "$(__systemd_osc_context_escape "$PWD")"
+    printf "\033]3008;start=%.64s%s;type=shell;cwd=%.255s\033\\" "$systemd_osc_context_shell_id" "$(__systemd_osc_context_common)" "$(__systemd_osc_context_escape "$PWD")"
 
     # Prepare cmd id for next command
     read -r systemd_osc_context_cmd_id </proc/sys/kernel/random/uuid
@@ -68,7 +68,7 @@ __systemd_osc_context_ps0() {
     # Skip if PROMPT_COMMAND= is cleared manually or by other profiles.
     [ -n "${systemd_osc_context_cmd_id:-}" ] || return
 
-    printf "\033]3008;start=%s%s;type=command;cwd=%s\033\\" "$systemd_osc_context_cmd_id" "$(__systemd_osc_context_common)" "$(__systemd_osc_context_escape "$PWD")"
+    printf "\033]3008;start=%.64s%s;type=command;cwd=%.255s\033\\" "$systemd_osc_context_cmd_id" "$(__systemd_osc_context_common)" "$(__systemd_osc_context_escape "$PWD")"
 }
 
 if [ -n "${BASH_VERSION:-}" ]; then