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| 1 | +// SPDX-License-Identifier: AGPL-3.0-or-later |
| 2 | + |
| 3 | +package auth |
| 4 | + |
| 5 | +import ( |
| 6 | + "net/http" |
| 7 | + "strconv" |
| 8 | + "strings" |
| 9 | + "time" |
| 10 | + |
| 11 | + "github.com/go-chi/chi/v5" |
| 12 | + "github.com/jackc/pgx/v5/pgtype" |
| 13 | + |
| 14 | + "github.com/tenseleyFlow/shithub/internal/auth/email" |
| 15 | + "github.com/tenseleyFlow/shithub/internal/auth/token" |
| 16 | + usersdb "github.com/tenseleyFlow/shithub/internal/users/sqlc" |
| 17 | + "github.com/tenseleyFlow/shithub/internal/web/middleware" |
| 18 | +) |
| 19 | + |
| 20 | +// maxEmailsPerUser caps how many addresses a user can register. Picked |
| 21 | +// to match GitHub's posted ceiling — high enough that nobody hits it |
| 22 | +// legitimately, low enough that an abuser can't use the table as scratch |
| 23 | +// space. |
| 24 | +const maxEmailsPerUser = 10 |
| 25 | + |
| 26 | +// settingsEmailsList renders GET /settings/emails. |
| 27 | +func (h *Handlers) settingsEmailsList(w http.ResponseWriter, r *http.Request) { |
| 28 | + h.renderEmailsList(w, r, "", "") |
| 29 | +} |
| 30 | + |
| 31 | +// settingsEmailsAdd handles POST /settings/emails. |
| 32 | +func (h *Handlers) settingsEmailsAdd(w http.ResponseWriter, r *http.Request) { |
| 33 | + if err := r.ParseForm(); err != nil { |
| 34 | + h.d.Render.HTTPError(w, r, http.StatusBadRequest, "form parse") |
| 35 | + return |
| 36 | + } |
| 37 | + user := middleware.CurrentUserFromContext(r.Context()) |
| 38 | + addr := strings.ToLower(strings.TrimSpace(r.PostFormValue("email"))) |
| 39 | + |
| 40 | + if !looksLikeEmail(addr) { |
| 41 | + h.renderEmailsList(w, r, "Please enter a valid email address.", "") |
| 42 | + return |
| 43 | + } |
| 44 | + |
| 45 | + count, err := h.countUserEmails(r, user.ID) |
| 46 | + if err != nil { |
| 47 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 48 | + return |
| 49 | + } |
| 50 | + if count >= maxEmailsPerUser { |
| 51 | + h.renderEmailsList(w, r, "You've reached the per-account email cap. Remove one first.", "") |
| 52 | + return |
| 53 | + } |
| 54 | + |
| 55 | + tokEnc, tokHash, err := token.New() |
| 56 | + if err != nil { |
| 57 | + h.d.Logger.ErrorContext(r.Context(), "emails: token", "error", err) |
| 58 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 59 | + return |
| 60 | + } |
| 61 | + |
| 62 | + tx, err := h.d.Pool.Begin(r.Context()) |
| 63 | + if err != nil { |
| 64 | + h.d.Logger.ErrorContext(r.Context(), "emails: begin", "error", err) |
| 65 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 66 | + return |
| 67 | + } |
| 68 | + defer func() { _ = tx.Rollback(r.Context()) }() |
| 69 | + |
| 70 | + em, err := h.q.CreateUserEmail(r.Context(), tx, usersdb.CreateUserEmailParams{ |
| 71 | + UserID: user.ID, |
| 72 | + Email: addr, |
| 73 | + IsPrimary: false, |
| 74 | + Verified: false, |
| 75 | + VerificationTokenHash: tokHash, |
| 76 | + }) |
| 77 | + if err != nil { |
| 78 | + if isUniqueViolation(err) { |
| 79 | + h.renderEmailsList(w, r, "That email is already registered (here or to another account).", "") |
| 80 | + return |
| 81 | + } |
| 82 | + h.d.Logger.ErrorContext(r.Context(), "emails: insert", "error", err) |
| 83 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 84 | + return |
| 85 | + } |
| 86 | + expires := pgtype.Timestamptz{Time: time.Now().Add(24 * time.Hour), Valid: true} |
| 87 | + if _, err := h.q.CreateEmailVerification(r.Context(), tx, usersdb.CreateEmailVerificationParams{ |
| 88 | + UserEmailID: em.ID, TokenHash: tokHash, ExpiresAt: expires, |
| 89 | + }); err != nil { |
| 90 | + h.d.Logger.ErrorContext(r.Context(), "emails: verification row", "error", err) |
| 91 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 92 | + return |
| 93 | + } |
| 94 | + if err := tx.Commit(r.Context()); err != nil { |
| 95 | + h.d.Logger.ErrorContext(r.Context(), "emails: commit", "error", err) |
| 96 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 97 | + return |
| 98 | + } |
| 99 | + |
| 100 | + h.sendVerifyMessage(r, addr, user.Username, tokEnc) |
| 101 | + h.renderEmailsList(w, r, "", "Verification link sent to "+addr+".") |
| 102 | +} |
| 103 | + |
| 104 | +// settingsEmailsResend handles POST /settings/emails/{id}/resend. |
| 105 | +func (h *Handlers) settingsEmailsResend(w http.ResponseWriter, r *http.Request) { |
| 106 | + id, ok := h.parseEmailID(w, r) |
| 107 | + if !ok { |
| 108 | + return |
| 109 | + } |
| 110 | + user := middleware.CurrentUserFromContext(r.Context()) |
| 111 | + em, err := h.q.GetUserEmailByID(r.Context(), h.d.Pool, id) |
| 112 | + if err != nil || em.UserID != user.ID { |
| 113 | + h.d.Render.HTTPError(w, r, http.StatusNotFound, "") |
| 114 | + return |
| 115 | + } |
| 116 | + if em.Verified { |
| 117 | + h.renderEmailsList(w, r, "That address is already verified.", "") |
| 118 | + return |
| 119 | + } |
| 120 | + |
| 121 | + tokEnc, tokHash, err := token.New() |
| 122 | + if err != nil { |
| 123 | + h.d.Logger.ErrorContext(r.Context(), "emails: resend token", "error", err) |
| 124 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 125 | + return |
| 126 | + } |
| 127 | + tx, err := h.d.Pool.Begin(r.Context()) |
| 128 | + if err != nil { |
| 129 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 130 | + return |
| 131 | + } |
| 132 | + defer func() { _ = tx.Rollback(r.Context()) }() |
| 133 | + if err := h.q.SetVerificationToken(r.Context(), tx, usersdb.SetVerificationTokenParams{ |
| 134 | + ID: em.ID, VerificationTokenHash: tokHash, |
| 135 | + }); err != nil { |
| 136 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 137 | + return |
| 138 | + } |
| 139 | + if _, err := h.q.CreateEmailVerification(r.Context(), tx, usersdb.CreateEmailVerificationParams{ |
| 140 | + UserEmailID: em.ID, |
| 141 | + TokenHash: tokHash, |
| 142 | + ExpiresAt: pgtype.Timestamptz{Time: time.Now().Add(24 * time.Hour), Valid: true}, |
| 143 | + }); err != nil { |
| 144 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 145 | + return |
| 146 | + } |
| 147 | + if err := tx.Commit(r.Context()); err != nil { |
| 148 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 149 | + return |
| 150 | + } |
| 151 | + |
| 152 | + h.sendVerifyMessage(r, string(em.Email), user.Username, tokEnc) |
| 153 | + h.renderEmailsList(w, r, "", "Verification link resent to "+string(em.Email)+".") |
| 154 | +} |
| 155 | + |
| 156 | +// settingsEmailsSetPrimary handles POST /settings/emails/{id}/primary. |
| 157 | +func (h *Handlers) settingsEmailsSetPrimary(w http.ResponseWriter, r *http.Request) { |
| 158 | + id, ok := h.parseEmailID(w, r) |
| 159 | + if !ok { |
| 160 | + return |
| 161 | + } |
| 162 | + user := middleware.CurrentUserFromContext(r.Context()) |
| 163 | + em, err := h.q.GetUserEmailByID(r.Context(), h.d.Pool, id) |
| 164 | + if err != nil || em.UserID != user.ID { |
| 165 | + h.d.Render.HTTPError(w, r, http.StatusNotFound, "") |
| 166 | + return |
| 167 | + } |
| 168 | + if !em.Verified { |
| 169 | + h.renderEmailsList(w, r, "Verify the address before promoting it to primary.", "") |
| 170 | + return |
| 171 | + } |
| 172 | + if em.IsPrimary { |
| 173 | + h.renderEmailsList(w, r, "That address is already primary.", "") |
| 174 | + return |
| 175 | + } |
| 176 | + |
| 177 | + tx, err := h.d.Pool.Begin(r.Context()) |
| 178 | + if err != nil { |
| 179 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 180 | + return |
| 181 | + } |
| 182 | + defer func() { _ = tx.Rollback(r.Context()) }() |
| 183 | + if err := h.q.SetUserEmailPrimary(r.Context(), tx, usersdb.SetUserEmailPrimaryParams{ |
| 184 | + UserID: user.ID, ID: em.ID, |
| 185 | + }); err != nil { |
| 186 | + h.d.Logger.ErrorContext(r.Context(), "emails: set primary", "error", err) |
| 187 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 188 | + return |
| 189 | + } |
| 190 | + if err := h.q.LinkUserPrimaryEmail(r.Context(), tx, usersdb.LinkUserPrimaryEmailParams{ |
| 191 | + ID: user.ID, |
| 192 | + PrimaryEmailID: pgtype.Int8{Int64: em.ID, Valid: true}, |
| 193 | + }); err != nil { |
| 194 | + h.d.Logger.ErrorContext(r.Context(), "emails: link primary", "error", err) |
| 195 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 196 | + return |
| 197 | + } |
| 198 | + if err := tx.Commit(r.Context()); err != nil { |
| 199 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 200 | + return |
| 201 | + } |
| 202 | + h.renderEmailsList(w, r, "", "Primary email is now "+string(em.Email)+".") |
| 203 | +} |
| 204 | + |
| 205 | +// settingsEmailsRemove handles POST /settings/emails/{id}/remove. |
| 206 | +func (h *Handlers) settingsEmailsRemove(w http.ResponseWriter, r *http.Request) { |
| 207 | + id, ok := h.parseEmailID(w, r) |
| 208 | + if !ok { |
| 209 | + return |
| 210 | + } |
| 211 | + user := middleware.CurrentUserFromContext(r.Context()) |
| 212 | + rows, err := h.q.DeleteUserEmail(r.Context(), h.d.Pool, usersdb.DeleteUserEmailParams{ |
| 213 | + ID: id, UserID: user.ID, |
| 214 | + }) |
| 215 | + if err != nil { |
| 216 | + h.d.Logger.ErrorContext(r.Context(), "emails: delete", "error", err) |
| 217 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 218 | + return |
| 219 | + } |
| 220 | + if rows == 0 { |
| 221 | + h.renderEmailsList(w, r, "Couldn't remove that email — set a different primary first.", "") |
| 222 | + return |
| 223 | + } |
| 224 | + h.renderEmailsList(w, r, "", "Email removed.") |
| 225 | +} |
| 226 | + |
| 227 | +// renderEmailsList is the shared render path. |
| 228 | +func (h *Handlers) renderEmailsList(w http.ResponseWriter, r *http.Request, errMsg, successMsg string) { |
| 229 | + user := middleware.CurrentUserFromContext(r.Context()) |
| 230 | + rows, err := h.q.ListUserEmailsForUser(r.Context(), h.d.Pool, user.ID) |
| 231 | + if err != nil { |
| 232 | + h.d.Logger.ErrorContext(r.Context(), "emails: list", "error", err) |
| 233 | + h.d.Render.HTTPError(w, r, http.StatusInternalServerError, "") |
| 234 | + return |
| 235 | + } |
| 236 | + h.renderPage(w, r, "settings/emails", map[string]any{ |
| 237 | + "Title": "Emails", |
| 238 | + "CSRFToken": middleware.CSRFTokenForRequest(r), |
| 239 | + "SettingsActive": "emails", |
| 240 | + "Emails": rows, |
| 241 | + "Error": errMsg, |
| 242 | + "Success": successMsg, |
| 243 | + }) |
| 244 | +} |
| 245 | + |
| 246 | +// parseEmailID extracts and validates the {id} route param. On failure |
| 247 | +// writes a 404 and returns ok=false. |
| 248 | +func (h *Handlers) parseEmailID(w http.ResponseWriter, r *http.Request) (int64, bool) { |
| 249 | + id, err := strconv.ParseInt(chi.URLParam(r, "id"), 10, 64) |
| 250 | + if err != nil { |
| 251 | + h.d.Render.HTTPError(w, r, http.StatusNotFound, "") |
| 252 | + return 0, false |
| 253 | + } |
| 254 | + return id, true |
| 255 | +} |
| 256 | + |
| 257 | +func (h *Handlers) countUserEmails(r *http.Request, userID int64) (int, error) { |
| 258 | + rows, err := h.q.ListUserEmailsForUser(r.Context(), h.d.Pool, userID) |
| 259 | + if err != nil { |
| 260 | + h.d.Logger.ErrorContext(r.Context(), "emails: count", "error", err) |
| 261 | + return 0, err |
| 262 | + } |
| 263 | + return len(rows), nil |
| 264 | +} |
| 265 | + |
| 266 | +// sendVerifyMessage is best-effort: failures don't break the flow but |
| 267 | +// are logged so the operator can chase delivery issues. |
| 268 | +func (h *Handlers) sendVerifyMessage(r *http.Request, addr, username, tokEnc string) { |
| 269 | + msg, err := email.VerifyMessage(h.d.Branding, addr, username, tokEnc) |
| 270 | + if err != nil { |
| 271 | + h.d.Logger.WarnContext(r.Context(), "emails: build verify msg", "error", err) |
| 272 | + return |
| 273 | + } |
| 274 | + if err := h.d.Email.Send(r.Context(), msg); err != nil { |
| 275 | + h.d.Logger.WarnContext(r.Context(), "emails: send verify msg", "error", err) |
| 276 | + } |
| 277 | +} |