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dcb175d430
A new "lib/compfix.zsh" script defining a new handle_completion_insecurities() function has been added, which handles insecure completion directories by notifying users of said insecurities and moving away all existing completion caches to a temporary directory. While intended to be called at startup, this function is generally callable at any time (e.g., for testing).
61 lines
2.7 KiB
Bash
61 lines
2.7 KiB
Bash
# Handle completions insecurities (i.e., completion-dependent directories with
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# insecure ownership or permissions) by:
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#
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# * Human-readably notifying the user of these insecurities.
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# * Moving away all existing completion caches to a temporary directory. Since
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# any of these caches may have been generated from insecure directories, they
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# are all suspect now. Failing to do so typically causes subsequent compinit()
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# calls to fail with "command not found: compdef" errors. (That's bad.)
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function handle_completion_insecurities() {
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# List of the absolute paths of all unique insecure directories, split on
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# newline from compaudit()'s output resembling:
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#
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# There are insecure directories:
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# /usr/share/zsh/site-functions
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# /usr/share/zsh/5.0.6/functions
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# /usr/share/zsh
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# /usr/share/zsh/5.0.6
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#
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# Since the ignorable first line is printed to stderr and thus not captured,
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# stderr is squelched to prevent this output from leaking to the user.
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local -aU insecure_dirs
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insecure_dirs=( ${(f@):-"$(compaudit 2>/dev/null)"} )
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# If no such directories exist, get us out of here.
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if (( ! ${#insecure_dirs} )); then
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print "[oh-my-zsh] No insecure completion-dependent directories detected."
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return
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fi
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# List ownership and permissions of all insecure directories.
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print "[oh-my-zsh] Insecure completion-dependent directories detected:"
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ls -ld "${(@)insecure_dirs}"
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print "[oh-my-zsh] For safety, completions will be disabled until you manually fix all"
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print "[oh-my-zsh] insecure directory permissions and ownership and restart oh-my-zsh."
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print "[oh-my-zsh] See the above list for directories with group or other writability.\n"
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# Locally enable the "NULL_GLOB" option, thus removing unmatched filename
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# globs from argument lists *AND* printing no warning when doing so. Failing
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# to do so prints an unreadable warning if no completion caches exist below.
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setopt local_options null_glob
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# List of the absolute paths of all unique existing completion caches.
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local -aU zcompdump_files
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zcompdump_files=( "${ZSH_COMPDUMP}"(.) "${ZDOTDIR:-${HOME}}"/.zcompdump* )
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# Move such caches to a temporary directory.
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if (( ${#zcompdump_files} )); then
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# Absolute path of the directory to which such files will be moved.
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local ZSH_ZCOMPDUMP_BAD_DIR="${ZSH_CACHE_DIR}/zcompdump-bad"
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# List such files first.
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print "[oh-my-zsh] Insecure completion caches also detected:"
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ls -l "${(@)zcompdump_files}"
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# For safety, move rather than permanently remove such files.
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print "[oh-my-zsh] Moving to \"${ZSH_ZCOMPDUMP_BAD_DIR}/\"...\n"
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mkdir -p "${ZSH_ZCOMPDUMP_BAD_DIR}"
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mv "${(@)zcompdump_files}" "${ZSH_ZCOMPDUMP_BAD_DIR}/"
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fi
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}
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